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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



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FORM 10-Q



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|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------



For the quarterly period ended December 31, 2005



OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------



For the transition period from
 to



Commission file number 001-31614



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VITESSE SEMICONDUCTOR CORPORATION

(Exact name of registrant as specified in its charter)



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|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Delaware                                                       |  | 77-0138960                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)



741 Calle Plano
Camarillo, CA 93012

(Address of principal executive offices)



(805) 388-3700

(Registrants telephone number, including area code)



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Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months and (2) has been subject to such filing requirements for the past 90 days: Yes  x    No ̈





Indicate by check mark whether the registrant is a large
accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act.



Large accelerated filer ̈Accelerated filer  x                Non-accelerated filer ̈





Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act.):

Yes ̈No x



As of January 31, 2006,
there were 221,430,002 shares of the registrants $0.01 par value common stock outstanding.



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##### Table of Contents

VITESSE SEMICONDUCTOR CORPORATION



TABLE OF CONTENTS



|                                                                                                                             |  |            |  |  |  | 
|---------------------------------------------------------------------------------------------------------------------------- |  | ---------- |  |  |  | 
|                                                                                                                             |  | PageNumber
|PART I FINANCIAL INFORMATION                                                                                                 |  |           
|                                                                                                                             | 
|Item 1 Financial Statements:                                                                                                 |  |           
|                                                                                                                             | 
|Unaudited Condensed Consolidated Balance Sheets as of December 31, 2005 and September 30, 2005                               |  | 3         
|                                                                                                                             | 
|Unaudited Condensed Consolidated Statements of Operations for the three months ended December 31, 2005 and December 31, 2004 |  | 4         
|                                                                                                                             | 
|Unaudited Condensed Consolidated Statements of Cash Flows for the three months ended December 31, 2005 and December 31, 2004 |  | 5         
|                                                                                                                             | 
|Notes to Unaudited Condensed Consolidated Financial Statements                                                               |  | 6         
|                                                                                                                             | 
|Item 2 Managements Discussion and Analysis of Financial Condition and Results of Operations                                 |  | 12        
|                                                                                                                             | 
|Item 3 Quantitative and Qualitative Disclosure About Market Risk                                                             |  | 26        
|                                                                                                                             | 
|Item 4 Controls and Procedures                                                                                               |  | 27        
|                                                                                                                             | 
|PART II OTHER INFORMATION                                                                                                    |  |           
|                                                                                                                             | 
|Item 6 Exhibits and Reports on Form 8-K                                                                                      |  | 28        
|                                                                                                                             | 
|SIGNATURES                                                                                                                   |  | 29        
|                                                                                                                             | 
|CERTIFICATIONS                                                                                                               |  |           



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##### Table of Contents

PART I



FINANCIAL INFORMATION

VITESSE SEMICONDUCTOR CORPORATION

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except share data)



|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------- | ---------- | - | ------------------ | - | ---------- | -
|                                                                                                                                                                                 |  | December 31, 2005 |            |   | September 30, 2005 |  
|ASSETS                                                                                                                                                                           |  |                   |            |   |                    |   |            |  
|Current assets:                                                                                                                                                                  |  |                   |            |   |                    |   |            |  
|Cash and cash equivalents                                                                                                                                                        |  | $                 | 27,367     |   |                    | $ | 23,138     |  
|Short-term investments (principally marketable securities)                                                                                                                       |  |                   | 1,684      |   |                    |   | 8,862      |  
|Accounts receivable, net of allowances of $2,955 and $2,589 as of December 31, 2005 and September 30, 2005,
respectively                                                         |  |                   | 32,962     |   |                    |   | 30,403     |  
|Inventories, net                                                                                                                                                                 |  |                   | 35,140     |   |                    |   | 35,158     |  
|Prepaid expenses and other current assets                                                                                                                                        |  |                   | 6,994      |   |                    |   | 7,493      |  
|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  
|Total current assets                                                                                                                                                             |  |                   | 104,147    |   |                    |   | 105,054    |  
|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  
|Property and equipment, net                                                                                                                                                      |  |                   | 54,912     |   |                    |   | 58,074     |  
|Goodwill, net                                                                                                                                                                    |  |                   | 223,691    |   |                    |   | 223,691    |  
|Other intangible assets, net                                                                                                                                                     |  |                   | 14,638     |   |                    |   | 15,225     |  
|Other assets                                                                                                                                                                     |  |                   | 9,781      |   |                    |   | 9,292      |  
|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  
|Total assets                                                                                                                                                                     |  | $                 | 407,169    |   |                    | $ | 411,336    |  
|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  
|LIABILITIES AND SHAREHOLDERS EQUITY                                                                                                                                             |  |                   |            |   |                    |   |            |  
|Current liabilities:                                                                                                                                                             |  |                   |            |   |                    |   |            |  
|Current portion of long-term debt and capital leases                                                                                                                             |  | $                 | 6,768      |   |                    | $ | 7,355      |  
|Current portion of accrued restructuring                                                                                                                                         |  |                   | 1,376      |   |                    |   | 2,020      |  
|Deferred gain on sale of asset                                                                                                                                                   |  |                   | 294        |   |                    |   |           |  
|Accounts payable                                                                                                                                                                 |  |                   | 23,354     |   |                    |   | 20,188     |  
|Accrued expenses and other current liabilities                                                                                                                                   |  |                   | 15,139     |   |                    |   | 14,911     |  
|Deferred revenue                                                                                                                                                                 |  |                   | 7,551      |   |                    |   | 5,929      |  
|Income taxes payable                                                                                                                                                             |  |                   | 782        |   |                    |   | 699        |  
|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  
|Total current liabilities                                                                                                                                                        |  |                   | 55,264     |   |                    |   | 51,102     |  
|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  
|Deferred gain on sale of asset                                                                                                                                                   |  |                   | 2,641      |   |                    |   |           |  
|Deferred gain on derivative instrument                                                                                                                                           |  |                   | 4,319      |   |                    |   | 4,319      |  
|Other long-term liabilities                                                                                                                                                      |  |                   | 1,146      |   |                    |   | 1,146      |  
|Long-term debt and capital leases                                                                                                                                                |  |                   | 1,443      |   |                    |   | 2,770      |  
|Convertible subordinated debt, due October 2024                                                                                                                                  |  |                   | 96,700     |   |                    |   | 96,700     |  
|Minority interest                                                                                                                                                                |  |                   | 781        |   |                    |   | 772        |  
|Shareholders equity:                                                                                                                                                            |  |                   |            |   |                    |   |            |  
|Common stock, $.01 par value. Authorized 500,000,000 shares; issued and outstanding 219,200,615 and 218,858,254 shares on December 31,
2005 and September 30, 2005, respectively |  |                   | 2,209      |   |                    |   | 2,203      |  
|Additional paid-in capital                                                                                                                                                       |  |                   | 1,455,283  |   |                    |   | 1,450,901  |  
|Unearned compensation                                                                                                                                                            |  |                   | (48        | ) |                    |   | (64        | )
|Accumulated other comprehensive loss                                                                                                                                             |  |                   | (1         | ) |                    |   | (1         | )
|Accumulated deficit                                                                                                                                                              |  |                   | (1,212,568 | ) |                    |   | (1,198,512 | )
|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  
|Total shareholders equity                                                                                                                                                       |  |                   | 244,875    |   |                    |   | 254,527    |  
|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  
|Total liabilities and shareholders equity                                                                                                                                       |  | $                 | 407,169    |   |                    | $ | 411,336    |  
|                                                                                                                                                                                 |  |                   |            |   |                    |   |            |  



See accompanying Notes
to Unaudited Condensed Consolidated Financial Statements.



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VITESSE SEMICONDUCTOR CORPORATION

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share data)



|                                          |  |                    |         |   |                   |   |         |  
|----------------------------------------- |  | ------------------ | ------- | - | ----------------- | - | ------- | -
|                                          |  | Three Months Ended |        
|                                          |  | December 31, 2005  |         |   | December 31, 2004 |  
|Revenues                                  |  | $                  | 53,011  |   |                   | $ | 44,459  |  
|Costs and expenses:                       |  |                    |         |   |                   |   |         |  
|Cost of revenues                          |  |                    | 23,073  |   |                   |   | 20,198  |  
|Engineering, research and development     |  |                    | 24,184  |   |                   |   | 24,874  |  
|Selling, general and administrative       |  |                    | 15,536  |   |                   |   | 11,827  |  
|Restructuring costs                       |  |                    | 1,327   |   |                   |   |        |  
|Employee stock purchase plan compensation |  |                    |        |   |                   |   | 1,468   |  
|Amortization of intangible assets         |  |                    | 2,237   |   |                   |   | 2,377   |  
|                                          |  |                    |         |   |                   |   |         |  
|Total costs and expenses                  |  |                    | 66,357  |   |                   |   | 60,744  |  
|                                          |  |                    |         |   |                   |   |         |  
|Loss, before other expense, net           |  |                    | (13,346 | ) |                   |   | (16,285 | )
|                                          |  |                    |         |   |                   |   |         |  
|Interest income                           |  |                    | 132     |   |                   |   | 640     |  
|Interest expense                          |  |                    | (665    | ) |                   |   | (1,570  | )
|Other income                              |  |                    | 51      |   |                   |   | 258     |  
|                                          |  |                    |         |   |                   |   |         |  
|Other expense, net                        |  |                    | (482    | ) |                   |   | (672    | )
|                                          |  |                    |         |   |                   |   |         |  
|Loss, before income taxes                 |  |                    | (13,828 | ) |                   |   | (16,957 | )
|Income tax expense                        |  |                    | 228     |   |                   |   | 258     |  
|                                          |  |                    |         |   |                   |   |         |  
|Net loss                                  |  | $                  | (14,056 | ) |                   | $ | (17,215 | )
|                                          |  |                    |         |   |                   |   |         |  
|Net loss per share  basic and diluted:   |  | $                  | (0.06   | ) |                   | $ | (0.08   | )
|                                          |  |                    |         |   |                   |   |         |  
|Shares used in per share computations:    |  |                    |         |   |                   |   |         |  
|Basic and diluted                         |  |                    | 218,893 |   |                   |   | 213,296 |  



See accompanying Notes
to Unaudited Condensed Consolidated Financial Statements.



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VITESSE SEMICONDUCTOR CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

UNAUDITED

(in thousands)



|                                                                                          |  |                    |         |   |                   |   |          |  
|----------------------------------------------------------------------------------------- |  | ------------------ | ------- | - | ----------------- | - | -------- | -
|                                                                                          |  | Three Months Ended |        
|                                                                                          |  | December 31, 2005  |         |   | December 31, 2004 |  
|Cash flows from operating activities:                                                     |  |                    |         |   |                   |   |          |  
|Net loss                                                                                  |  | $                  | (14,056 | ) |                   | $ | (17,215  | )
|Adjustments to reconcile net loss to net cash (used in) provided by operating activities: |  |                    |         |   |                   |   |          |  
|Depreciation and amortization                                                             |  |                    | 7,842   |   |                   |   | 9,903    |  
|Amortization of debt issue costs                                                          |  |                    | 331     |   |                   |   | 548      |  
|Amortization of deferred compensation                                                     |  |                    | 16      |   |                   |   | 511      |  
|Other compensation expense                                                                |  |                    |        |   |                   |   | 1,631    |  
|Share-based compensation expense                                                          |  |                    | 3,735   |   |                   |   |         |  
|Gain on derivative instruments                                                            |  |                    |        |   |                   |   | (840     | )
|Restructuring charge                                                                      |  |                    | 1,327   |   |                   |   |         |  
|Change in operating assets and liabilities:                                               |  |                    |         |   |                   |   |          |  
|Accounts receivable, net                                                                  |  |                    | (2,559  | ) |                   |   | (2,614   | )
|Inventories, net                                                                          |  |                    | 18      |   |                   |   | 101      |  
|Prepaid expenses and other current assets                                                 |  |                    | 333     |   |                   |   | 18,538   |  
|Other assets                                                                              |  |                    | (654    | ) |                   |   | (130     | )
|Accounts payable                                                                          |  |                    | 1,716   |   |                   |   | 3,452    |  
|Accrued expenses and other current liabilities                                            |  |                    | 1,850   |   |                   |   | (330     | )
|Accrued restructuring                                                                     |  |                    | (1,963  | ) |                   |   | (1,730   | )
|Income taxes payable                                                                      |  |                    | 83      |   |                   |   | 204      |  
|                                                                                          |  |                    |         |   |                   |   |          |  
|Net cash (used in) provided by operating activities                                       |  |                    | (1,981  | ) |                   |   | 12,029   |  
|                                                                                          |  |                    |         |   |                   |   |          |  
|Cash flows from investing activities:                                                     |  |                    |         |   |                   |   |          |  
|Purchases of investments                                                                  |  |                    | (1,200  | ) |                   |   | (92,275  | )
|Proceeds from sale of investments                                                         |  |                    | 8,378   |   |                   |   | 230,144  |  
|Capital expenditures                                                                      |  |                    | (5,290  | ) |                   |   | (27,104  | )
|Sale of fixed assets                                                                      |  |                    | 5,774   |   |                   |   |         |  
|Payment for asset purchase                                                                |  |                    | (200    | ) |                   |   |         |  
|Other                                                                                     |  |                    | 9       |   |                   |   | 30       |  
|                                                                                          |  |                    |         |   |                   |   |          |  
|Net cash provided by investing activities                                                 |  |                    | 7,471   |   |                   |   | 110,795  |  
|                                                                                          |  |                    |         |   |                   |   |          |  
|Cash flows from financing activities:                                                     |  |                    |         |   |                   |   |          |  
|Principal payments under convertible subordinated debt and long-term debt                 |  |                    | (1,914  | ) |                   |   | (120,698 | )
|Proceeds from issuance of long-term debt                                                  |  |                    |        |   |                   |   | 6,505    |  
|Repurchase of convertible subordinated debt                                               |  |                    |        |   |                   |   | (12,370  | )
|Repurchase of common stock issued                                                         |  |                    | (348    | ) |                   |   |         |  
|Proceeds from issuance of common stock, net                                               |  |                    | 1,001   |   |                   |   | 642      |  
|                                                                                          |  |                    |         |   |                   |   |          |  
|Net cash used in financing activities                                                     |  |                    | (1,261  | ) |                   |   | (125,921 | )
|                                                                                          |  |                    |         |   |                   |   |          |  
|Increase (decrease) in cash and cash equivalents                                          |  |                    | 4,229   |   |                   |   | (3,097   | )
|Cash and cash equivalents at beginning of period                                          |  |                    | 23,138  |   |                   |   | 20,865   |  
|                                                                                          |  |                    |         |   |                   |   |          |  
|Cash and cash equivalents at end of period                                                |  | $                  | 27,367  |   |                   | $ | 17,768   |  
|                                                                                          |  |                    |         |   |                   |   |          |  
|Supplemental disclosures of cash flow information:                                        |  |                    |         |   |                   |   |          |  
|Cash paid during the period for:                                                          |  |                    |         |   |                   |   |          |  
|Interest                                                                                  |  | $                  | 861     |   |                   | $ | 901      |  
|                                                                                          |  |                    |         |   |                   |   |          |  
|Income taxes                                                                              |  | $                  | 178     |   |                   | $ | 54       |  
|                                                                                          |  |                    |         |   |                   |   |          |  



See accompanying Notes
to Unaudited Condensed Consolidated Financial Statements.



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VITESSE SEMICONDUCTOR CORPORATION



NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS



Note 1. Basis of Presentation and Significant Accounting Policies



The accompanying condensed consolidated financial statements are unaudited and include the accounts of Vitesse Semiconductor Corporation and its
subsidiaries (the Company). All intercompany accounts and transactions have been eliminated. In managements opinion, all adjustments (consisting only of normal recurring accruals) which are necessary for a fair presentation of
financial condition and results of operations are reflected in the attached interim financial statements. This report should be read in conjunction with the audited financial statements presented in the 2005 Annual Report on Form 10-K. Footnotes and
other disclosures that would substantially duplicate the disclosures in the Companys audited financial statements for fiscal year 2005 contained in the Annual Report have been omitted. The interim financial information herein is not
necessarily representative of the results to be expected for any subsequent period.



Revenue Recognition



In
accordance with Securities and Exchange Commission Staff Accounting Bulletin No. 101, Revenue Recognition in Financial Statements(SAB 101), as well as Staff Accounting Bulletin No. 104, Revenue Recognition(SAB 104), the Company recognizes product revenue when the following fundamental criteria are met: (i) persuasive evidence of an arrangement exists, (ii) the sales price is fixed or determinable, (iii) products are
shipped to customers, which is when title and risk of loss transfers to the customer, and (iv) collection of the resulting receivable is reasonably assured. Revenue from development contracts is recognized upon attainment of specific milestones
established under customer contracts. Revenue from products deliverable under development contracts, including design tools and prototype products, is recognized upon delivery. Costs related to development contracts are expensed as incurred. The
Company records reductions to revenue for estimated product returns and pricing adjustments in the same period that the related revenue is recorded. The amount of these reductions is based on historical sales returns, analysis of credit memo data
and other known factors at the time. Actual returns could be different from these estimates and current provisions for sales returns and allowances, resulting in future charges to earnings. Certain of the Companys product revenues are from a
major distributor under an agreement allowing for pricing credits and right of return on products unsold. Accordingly, the Company defers recognition of revenue on such products until the products are sold by the distributor to the end user.
Customer purchase orders and/or contracts are generally used to determine the existence of an arrangement. The Company assesses whether a price is fixed or determinable based upon the payment terms and whether the sales price is subject to an
adjustment. Shipping documents are used to verify product shipment. Collectibility of accounts receivable is assessed based primarily upon the creditworthiness of the customer determined by credit checks and analysis, as well as customers
payment history.



Inventories



Inventories are stated at the lower of cost or market (net realizable
value). Costs associated with the development of a new product are charged to engineering, research and development expense as incurred. At each balance sheet date, the Company evaluates its ending inventories for excess quantities and obsolescence.
This evaluation includes analyses of sales levels by product and projections of future demand. If inventories on hand are in excess of forecasted demand, the Company provides appropriate reserves for such excess inventory. If the determination is
made that inventory is obsolete, these inventories are written off in the period the determination is made. Inventories are shown net of reserves of $10.9 million and $7.8 million at December 31, 2005, and September 30, 2005, respectively.



Goodwill and Other Intangible Asset



In July 2001, the Financial Accounting Standards Board (FASB)
issued Statement No. 141, Business Combinations(SFAS 141), and Statement No. 142, Goodwill and Other Intangible Assets(SFAS 142). SFAS 141 requires that the purchase method of accounting be used for
all business combinations initiated after June 30, 2001, and that certain intangible assets acquired in a business combination be recognized as assets apart from goodwill. SFAS 142 requires goodwill to be tested for impairment under certain
circumstances, and written down when impaired, rather than being amortized as previous standards required. Furthermore, SFAS 142 requires intangible assets, other than goodwill, to be amortized over their useful lives unless these lives are
determined to be indefinite. Other intangible assets are carried at cost less accumulated amortization. Amortization is computed over the useful lives of the respective assets, generally two to ten years.



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Income Taxes



The Company accounts for income taxes pursuant to the provisions of the FASBs Statement No. 109 (SFAS
109). Under the asset and liability method of Statement No. 109, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing
assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. The Company must assess the likelihood that its deferred tax assets will be recovered from future taxable income and to the extent the Company
believes that recovery is not likely, the Company must establish a valuation allowance. To the extent the Company establishes a valuation allowance or increases this allowance in a period, it must include an expense within the tax provision in the
statement of operations. As of December 31, 2005, all of the Companys deferred tax assets are subject to a 100% valuation allowance.



Computation of Net Income (Loss) per Share



Basic net loss per share is computed using the weighted-average number of common shares outstanding during the period. Diluted net loss per share is
computed using the weighted-average number of common shares and excludes certain dilutive potential common shares outstanding, as their effect is antidilutive on loss from continuing operations. Dilutive potential common shares consist of employee
stock options, convertible subordinated debentures, and consideration for a business acquisitions that is payable in stock or cash at the Companys option.



Because the Company incurred losses in the quarters ended December 31, 2005 and 2004, the effect of dilutive securities totaling 79,464,678 and
83,849,029 equivalent shares, respectively, has been excluded in net loss per share, as their impact would be antidilutive.



Use of Estimates



Management of the Company has made a number of estimates and assumptions relating to the reporting of assets and liabilities to prepare these consolidated
financial statements in conformity with generally accepted accounting principles. Actual results could differ from those estimates.



Note 2. Accounting for Stock-Based Compensation



On October 1, 2005, the Company adopted the fair value recognition provisions of FASB Statement No. 123R, Share-Based Payment,
(SFAS 123R). Prior to October 1, 2005, the Company accounted for share-based payments under the recognition and measurement provisions of Accounting Principles Board (APB) Opinion No. 25, Accounting for Stock
Issued to Employees, and related Interpretations, as permitted by FASB Statement No. 123, Accounting for Stock-Based Compensation (SFAS 123). In accordance with APB Opinion No. 25, no compensation cost was required
to be recognized for options granted that had an exercise price equal to the market value of the underlying common stock on the date of grant.



The Company adopted SFAS 123R using the modified-prospective-transition method. Under that transition method, compensation cost recognized in the quarter
ended December 31, 2005, includes: i) compensation cost for all share-based payments granted prior to, but not yet vested as of October 1, 2005, based on the grant-date fair value estimated in accordance with the original provisions of
SFAS 123, and ii) compensation cost for all share-based payments granted subsequent to October 1, 2005, based on the grant-date fair value estimated in accordance with the provisions of SFAS 123R. The results for prior periods have not been
restated.



As a result of adopting SFAS 123R in the quarter
ended December 31, 2005, net loss for the first quarter of fiscal 2006 is $3.7 million lower than if the Company had continued to account for share-based compensation under APB Opinion No. 25 as the Company did in the comparable period a
year ago. The Company has not recognized, and does not expect to recognize in the near future, any tax benefit related to employee stock based compensation cost as a result of the full valuation allowance on its net deferred tax assets and its net
operating loss carryforwards.



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As of December 31, 2005, the Company has the following share-based compensation plans:



Employee Stock Purchase Plan



The Company has an employee stock purchase plan for all eligible employees.
For offering periods beginning prior to December, 2005, employees may purchase shares of the Companys common stock at six-month intervals at 85% of the lower of the fair market value at the beginning of the twenty-four month offering period
and the end of the six-month purchase interval. For offering periods beginning after December 2005, employees may purchase shares of the Companys common stock at 85% of the lesser of the fair market value on the first day of the offering
period or on the last day of the period, and each offering period has a maximum duration of 6 months. Employees purchase such stock using payroll deductions and annual contributions which may not exceed 20% of their compensation, including
commissions and overtime, but excluding bonuses. No more than 5,000 shares may be purchased on any purchase date per employee. On January 26, 2004, the shareholders approved an amendment to the plan to increase the number of shares reserved for
issuance under the plan from 13.0 million shares to 21.5 million shares of common stock. Through December 31, 2005, 19,015,086 shares had been purchased under the plan. As of December 31, 2005, the total unrecognized compensation
cost related to the plan was $0.2 million and is expected to be recognized over a weighted average period of approximately six months. At December 31, 2005, 2,484,914 shares were reserved for future issuance.



Stock Option Plans



The Company has in effect several stock-based plans under which
non-qualified and incentive stock options have been granted to employees. Options generally vest and become exercisable at the rate of 25% per year. The exercise price of the Companys employee stock options is generally equal to the fair
market value of the underlying shares of common stock on the date of grant. The term of options is generally 10 years.



On January 23, 2001, the Companys shareholders approved the adoption of the Companys 2001 Stock Incentive Plan (the 2001
Plan) which replaced the 1991 Stock Option Plan that expired in August 2001 and the Directors Plan that expired in January 2002. The 2001 Plan provides for the grant to employees of incentive stock options within the meaning of
Section 422 of the Internal Revenue Code of 1986, as amended, and for the grant to employees, consultants and directors of nonstatutory stock options and certain other stock-based awards as determined by the Board of Directors or Compensation
Committee.



Pursuant to the 2001 Plan, the number of shares
reserved under the Plan automatically increases by a number of shares equal to 4.0% of the Companys common stock outstanding at the end of each fiscal year. Under all stock option plans, a total of 68,957,031 shares of common stock have been
reserved for issuance as of December 31, 2005 and 12,001,127 remained available for future grant.



The following table summarizes stock option activity during the first quarter of fiscal 2006 under the employee stock option plans:



|                                          |  |                  |   |  |                                           |       |                                          |      |                                  |   |      
|----------------------------------------- |  | ---------------- | - |  | ----------------------------------------- | ----- | ---------------------------------------- | ---- | -------------------------------- | - | -----
|                                          |  | Number of Shares |   |  | Weighted Average Exercise Price Per Share |       | WeightedAverage RemainingContractualTerm |      | AggregateIntrinsicValue ($000s)
|Options outstanding at September 30, 2005 |  | 55,038,897       |   |  | $                                         | 8.61  |                                          |      |                                  |   |      
|Options:                                  |  |                  |   |  |                                           |       |                                          |      |                                  |   |      
|Granted                                   |  | 4,299,150        |   |  |                                           | 2.39  |                                          |      |                                  |   |      
|Exercised                                 |  | (690,758         | ) |  |                                           | 1.45  |                                          |      |                                  |   |      
|Canceled                                  |  | (1,691,385       | ) |  |                                           | 10.07 |                                          |      |                                  |   |      
|                                          |  |                  |   |  |                                           |       |                                          |      |                                  |   |      
|Options outstanding at December 31, 2005  |  | 56,955,904       |   |  | $                                         | 8.48  |                                          | 6.44 |                                  | $ | 7,301
|                                          |  |                  |   |  |                                           |       |                                          |      |                                  |   |      
|Exercisable at December 31, 2005          |  | 37,361,335       |   |  | $                                         | 10.83 |                                          | 5.62 |                                  | $ | 7,278



As of
December 31, 2005, there was $33.9 million of total unrecognized compensation cost related to unvested stock options. This cost is expected to be recognized over a weighted-average period of approximately 4.68 years. The total intrinsic value
of options exercised in the first quarter of fiscal 2006 and fiscal 2005 was $.5 million and $1.2 million, respectively. The fair value of options vested in the first quarter of fiscal 2006 was $5.9 million.



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##### Table of Contents

The fair value of each option award is estimated on the date of grant using the Black-Scholes option
valuation model with the weighted average assumptions noted in the table set forth below. The expected term of options granted is derived from historical data on employee exercise and post-vesting employment termination behavior. The risk-free
interest rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. Expected volatility is based on the historical volatility of our stock.



For options granted prior to October 1, 2005, and valued in accordance
with SFAS 123, the expected volatility used to estimate the fair value of the options was based solely on the historical volatility of the Companys stock; the Company used the ratable vested method for expense attribution; and the Company
recognized option forfeitures as they occurred as allowed by SFAS 123.



For options granted after October 1, 2005, and valued in accordance with SFAS 123R, the Company used the ratable method for expense attribution, estimated forfeitures and only recognized expense for those shares expected to vest. The
estimated forfeiture rate in the first quarter of fiscal 2006, based on the historical forfeiture experience, was approximately 7.64%.



|                              |  |                                       |   |  |                                                |   |  |                  |   |  |                  |  
|----------------------------- |  | ------------------------------------- | - |  | ---------------------------------------------- | - |  | ---------------- | - |  | ---------------- | -
|                              |  | Stock Option Plans Three months ended |   |  | Employee Stock Purchase PlanThree months ended |  
|                              |  | December 31,2005                      |   |  | December 31,2004                               |   |  | December 31,2005 |   |  | December 31,2004 |  
|Average expected life (years) |  | 4.68                                  |   |  | 4.97                                           |   |  | 0.49             |   |  | 1.23             |  
|Expected volatility           |  | 87                                    | % |  | 75                                             | % |  | 50               | % |  | 75               | %
|Risk-free interest rate       |  | 4.45                                  | % |  | 3.31                                           | % |  | 4.13             | % |  | 1.98             | %
|Dividends                     |  |                                      |   |  |                                               |   |  |                 |   |  |                 |  



The Black-Scholes
option valuation model requires the input of highly subjective assumptions, including the expected life of the stock-based award and stock price volatility. The assumptions listed above represent managements best estimates, but these estimates
involve inherent uncertainties and the application of management judgment. As a result, if other assumptions had been used, the recorded and pro forma stock-based compensation expense could have been materially different from that depicted above and
below. In addition, the Company is required to estimate the expected forfeiture rate and only recognize expense for those shares expected to vest. If its actual forfeiture rate is materially different from its estimate, the share-based compensation
expense could be materially different.



The weighted-average
grant-date per share fair value of options granted in the first quarter of fiscal 2006 and fiscal 2005 was $1.65 and $1.62, respectively. The weighted-average estimated per share fair value of shares granted under the Employee Stock Purchase Plan in
the first quarter of fiscal 2006 and fiscal 2005 was $.65 and $1.00, respectively.



During September 2005, we accelerated the vesting of employee stock options to purchase 3.8 million shares of common stock, with exercise prices greater than $5.27. Excluded from this action were any options granted
in the prior twelve months and options held by outside directors. At the time of the action, our reported Nasdaq National Market closing price was $1.87; therefore at the time of the acceleration of vesting there was no intrinsic value for those
options affected. We believe that such options had limited economic value and were not offering sufficient incentive to the employees when compared to the potential future expense of $6.8 million that would have been required to be recorded in
future periods under FAS 123R had the options not been accelerated.



The following table illustrates the effect on net income and earnings per share if the Company had applied the fair value recognition provisions of FAS 123 to options granted under its stock option plans, non-vested stock awards granted and
shares issued under the Employee Stock Purchase Plan in the first quarter of fiscal 2005. For purposes of pro forma disclosures, the value of the options is estimated using a Black-Scholes option valuation model and amortized to expense over the
options vesting periods.



|                                                                                                           |  |                  |         |  
|---------------------------------------------------------------------------------------------------------- |  | ---------------- | ------- | -
|(in thousands, except per share amounts)                                                                   |  | December 31,2004 |        
|Net loss as reported                                                                                       |  | $                | (17,215 | )
|Add: Stock-based employee compensation expense included in reported net loss                               |  |                  | 2,142   |  
|Deduct: Stock-based employee compensation expense determined under fair value based methods for all awards |  |                  | (9,345  | )
|Pro forma net loss                                                                                         |  | $                | (24,418 | )
|Net loss per share as reportedbasic and diluted                                                           |  | $                | (0.08   | )
|Pro forma net loss per sharebasic and diluted                                                             |  | $                | (0.11   | )



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Note 3. Restructuring Costs



October 2005 Restructuring Program



During the quarter ended December 31, 2005, the Company implemented a restructuring program to align its costs with its
projected revenues (the October 2005 Program). As a result of implementing the October 2005 Program, the Company incurred a charge of $1.3 million in the quarter ended December 31, 2005. The October 2005 Program was comprised of the
following components:



Workforce reduction The
Company terminated 70 employees, which included 47 from engineering, research and development operations, 7 from manufacturing operations, 13 from sales and marketing and 3 from general and administrative functions. These employees were notified
during October 2005. The total charge for workforce reduction was $1.3 million, with payments expected to be complete by the quarter ending March 31, 2006.



Excess Facilities  As a result of this restructuring program, the Company closed its Castle Rock, Colorado design center as of
November 1, 2005. The charge of $23,000 consisted of the November 2005 rent and the lease buyout related to this facility.



Impairment of Assets The impairment of assets charge of $8,000 includes the write-down of certain excess fixed assets located at the Castle
Rock, Colorado location.



A combined summary of all of the
Companys historical restructuring programs is as follows (in thousands):



|                              |  |                     |       |   |                   |   |       |                            |  |   |                      |   |  |       |    |   |  |   |        |  
|----------------------------- |  | ------------------- | ----- | - | ----------------- | - | ----- | -------------------------- |  | - | -------------------- | - |  | ----- | -- | - |  | - | ------ | -
|                              |  | Workforce Reduction |       |   | Excess Facilities |   |       | Contract Termination Costs |  |   | Impairment of Assets |   |  | Total |   
|Balance at September 30, 2005 |  | $                   |      |   |                   | $ | 1,169 |                            |  | $ | 851                  |   |  | $     |   |   |  | $ | 2,020  |  
|Charged to expense            |  |                     | 1,296 |   |                   |   | 23    |                            |  |   |                     |   |  |       | 8  |   |  |   | 1,327  |  
|Non cash amounts              |  |                     |      |   |                   |   |      |                            |  |   |                     |   |  |       | (8 | ) |  |   | (8     | )
|Cash payments                 |  |                     | (976  | ) |                   |   | (557  | )                          |  |   | (430                 | ) |  |       |   |   |  |   | (1,963 | )
|                              |  |                     |       |   |                   |   |       |                            |  |   |                      |   |  |       |    |   |  |   |        |  
|Balance at December 31, 2005  |  | $                   | 320   |   |                   | $ | 635   |                            |  | $ | 421                  |   |  | $     |   |   |  | $ | 1,376  |  
|                              |  |                     |       |   |                   |   |       |                            |  |   |                      |   |  |       |    |   |  |   |        |  



Note 4. Long-Term
Debt



On September 22, 2004 the Company issued $90.0
million in aggregate principal amount of its 1.5% Convertible Subordinated Debentures due 2024 (2024 Debentures), to qualified institutional buyers in reliance on Rule 144A under the Securities Act of 1933, as amended. Net proceeds
received by the Company, after costs of issuance, were approximately $86.9 million. On October 15, 2004 the Company issued an additional $6.7 million in aggregate principal amount of its 2024 Debentures to qualified institutional buyers in
reliance on Rule 144A under the Securities Act of 1933, as amended. Net proceeds received by the Company from the October issuance, after costs of issuance, were approximately $6.5 million. The 2024 Debentures are unsecured obligations and are
subordinated in right of payment to all of the Companys existing and future senior indebtedness, including indebtedness under the Companys amended senior credit facility. Interest is payable in arrears semiannually on October 1 and
April 1 of each year. The 2024 Debentures are convertible into shares of the Companys common stock at an initial conversion price of $3.92 per share, subject to adjustment. This results in an initial conversion rate of approximately
255.1020 shares of common stock per $1,000 principal amount of the debentures. Upon conversion, the Company will have the option to deliver cash in lieu of shares of its common stock or a combination of cash and shares of common stock. The Company
may redeem the 2024 Debentures after October 1, 2007 if its stock price is at least 170% of the conversion price, or approximately $6.67 per share, for 20 trading days within any 30 consecutive trading day period, and may also redeem the 2024
Debentures beginning October 1, 2009 without being subject to such condition. In addition, holders of the 2024 Debentures will have the right to require the Company to repurchase the 2024 Debentures on October 1 of 2009, 2014 and 2019.
Holders will also have the option, subject to certain conditions, to require the Company to repurchase any debentures held by such holder in the event of a fundamental change, at a price equal to 100% of the principal amount of the debentures plus
accrued and unpaid interest plus, under certain circumstances, a make-whole premium. For the quarters ended December 31, 2005 and December 31, 2004, interest expense relating to the debentures was $0.4 million. At December 31, 2005, there
was $96.7 million principal amount of the debentures outstanding.



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##### Table of Contents

Note 5. Purchase of Assets



On November 30, 2005, the Company entered into an agreement with Infinera Corporation (Infinera), under the
terms of which, the Company purchased certain assets related to Infineras development of certain technology and products. As of December 31, 2005, the Company had committed to pay $1.7 million for developed technology, an identifiable
intangible asset.



Note 6. Goodwill and Other Intangible
Assets



The following table presents the Companys
goodwill (in thousands):



|                      |  |                   |         |                    |   |        
|--------------------- |  | ----------------- | ------- | ------------------ | - | -------
|                      |  | December 31, 2005 |         | September 30, 2005
|Gross carrying amount |  | $                 | 223,691 |                    | $ | 223,691



The following table
presents details of the Companys total other intangible assets (in thousands):



|                         |  |                       |        |                          |   |         |             |  |   |       
|------------------------ |  | --------------------- | ------ | ------------------------ | - | ------- | ----------- |  | - | ------
|                         |  | Gross Carrying Amount |        | Accumulated Amortization |   |         | Net Balance
|December 31, 2005        |  |                       |        |                          |   |         |             |  |   |       
|Customer relationships   |  | $                     | 3,513  |                          | $ | (2,694  | )           |  | $ | 819   
|Technology               |  |                       | 39,194 |                          |   | (25,375 | )           |  |   | 13,819
|Covenants not to compete |  |                       | 4,000  |                          |   | (4,000  | )           |  |   |      
|                         |  |                       |        |                          |   |         |             |  |   |       
|Total                    |  | $                     | 46,707 |                          | $ | (32,069 | )           |  | $ | 14,638
|                         |  |                       |        |                          |   |         |             |  |   |       
|September 30, 2005       |  |                       |        |                          |   |         |             |  |   |       
|Customer relationships   |  | $                     | 3,513  |                          | $ | (2,569  | )           |  | $ | 944   
|Technology               |  |                       | 37,544 |                          |   | (23,263 | )           |  |   | 14,281
|Covenants not to compete |  |                       | 4,000  |                          |   | (4,000  | )           |  |   |      
|                         |  |                       |        |                          |   |         |             |  |   |       
|Total                    |  | $                     | 45,057 |                          | $ | (29,832 | )           |  | $ | 15,225
|                         |  |                       |        |                          |   |         |             |  |   |       



The estimated future
amortization expense of other intangible assets is as follows (in thousands):



|                         |  |        |       
|------------------------ |  | ------ | ------
|Fiscal year              |  | Amount
|Remainder of fiscal 2006 |  | $      | 6,019 
|2007                     |  |        | 6,261 
|2008                     |  |        | 1,839 
|2009                     |  |        | 476   
|Thereafter               |  |        | 43    
|                         |  |        |       
|Total                    |  | $      | 14,638
|                         |  |        |       



The Company only
operates within one reporting unit as defined by SFAS 142. Therefore, allocation of goodwill is not required.



The Company is required to perform goodwill impairment tests on an annual basis and between annual tests in certain circumstances. The Company recognizes
an impairment loss based on the excess of the carrying amounts of the assets over their respective fair values. Fair value of goodwill is determined by using a valuation model based on a market approach. Fair value of other intangible assets and
long-lived assets is determined by undiscounted future cash flows, appraisals or other methods. If the long-lived asset determined to be impaired is to be held and used, the Company recognizes an impairment charge to the extent the present value of
anticipated net cash flows attributable to the asset are less than the assets carrying value. The fair value of the long-lived asset then becomes the assets new carrying value. There was no impairment of goodwill during the three months
ended December 31, 2005 and December 31, 2004. Future goodwill impairment tests may result in charges to earnings.



Note 7. Inventories, net



Inventories consist of the following (in thousands):



|                                   |  |                   |        |                    |   |       
|---------------------------------- |  | ----------------- | ------ | ------------------ | - | ------
|                                   |  | December 31, 2005 |        | September 30, 2005
|Raw materials                      |  | $                 | 2,590  |                    | $ | 2,141 
|Work in process and finished goods |  |                   | 32,550 |                    |   | 33,017
|                                   |  |                   |        |                    |   |       
|                                   |  | $                 | 35,140 |                    | $ | 35,158
|                                   |  |                   |        |                    |   |       



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Note 8. Sale-leaseback



In December 2005, we sold a building and land located in Camarillo, California, to a third party for total cash
consideration of $6.0 million, less transaction expenses of $0.2 million. In addition, we entered into a lease agreement whereby we would leaseback this building from the buyer for 10 years, commencing December 29, 2005. Pursuant to the lease
agreement, the lessor held back $1.5 million of the consideration for the sale of the building for tenant improvements. As result of this transaction, we recorded a deferred gain of $2.9 million as of December 31, 2005, which will be amortized
over the life of the lease beginning in the quarter ending March 31, 2006.



Note 9. Significant Customers, Concentration of Credit Risk and Segment Information



The Company generally sells its products to customers engaged in the design and/or manufacture of high technology products either recently introduced or
not yet introduced to the marketplace. Substantially all the Companys trade accounts receivable are due from such sources. In the first quarter of fiscal 2006, no customer accounted for greater than 10% of total revenues. In the first
quarter of fiscal 2005, one customer, EMC Corporation, accounted for greater than 10% of total revenues.



The Company has one reportable operating segment as defined by SFAS No. 131, Disclosure about Segments of an Enterprise and Related
Information. Substantially all long-lived assets are located in the United States.



The Company principally targets three markets within the communications and storage industries: storage, Ethernet, and networking.



Within the storage industry the Company specifically addresses enterprise-class mass storage systems, switches, servers and
host bus adaptors, which today are primarily based on the Fibre Channel protocol. Products in this area include physical layer devices such as serializers/deserializers (SerDes), port bypass circuits, enclosure management controllers and fabric
switches.



The Companys Ethernet products target systems
within LANs that are designed to deliver high speed interconnections between buses, backplanes, servers and switches using the Gigabit Ethernet protocol. Ethernet products include transceivers, switches and Media Access Controllers.



The Companys networking products are targeted at telecommunications and
enterprise systems. Telecommunications systems, typically marketed by large communications equipment companies and sold to communications service providers, include add-drop multiplexers, digital cross connects and carrier-class routers and
switches. Products designed for this market include framers, mappers, fabric switches, TSI switches and physical layer devices. Products targeting the enterprise space include transceivers, SerDes, network processors, fabric switches and physical
media devices.



Revenues from storage products were $15.0
million and $12.1 million in the first quarters of fiscal 2006 and 2005, respectively. Revenues from Ethernet products were $9.0 million and $4.5 million in the first quarters of fiscal 2006 and 2005, respectively. Revenues from products targeting
the networking market were $29.0 million and $27.9 million in the first quarters of fiscal 2006 and 2005, respectively.



Revenues within the United States accounted for 40% and 44% of total revenues in the first quarters of fiscal 2006 and 2005, respectively.



|Item 2. | Managements Discussion and Analysis of Financial Condition and Results of Operations
|------- | -------------------------------------------------------------------------------------



The information set forth in Managements Discussion and Analysis of Financial Condition and Results of
Operations below includes forward looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the Securities Act), in particular, in Results of
OperationsRevenues, Cost of Revenues, Liquidity and Capital Resources and is subject to the safe harbor created by that section. Factors that management believes could cause results to differ
materially from those projected in the forward looking statements are set forth below in Managements Discussion and Analysis of Financial Condition and Results of Operations and Factors That May Affect Future Operating
Results.



Overview



We are a leading supplier of high-performance integrated circuits
(ICs) principally targeted at systems manufacturers in the communications and storage industries. Within the communications industry, our products address the enterprise, metro and core segments of the communications network, where they
enable data to be transmitted at high speeds and to be processed and switched under a variety of protocols. In the storage industry, our products enable storage devices to be networked efficiently and in a cost-effective manner. Our customers
include leading communications and storage original equipment manufacturers (OEMs) such as Alcatel, Cisco, EMC, Fujitsu, Hewlett Packard, Hitachi, Huawei, IBM, LSI Logic, Lucent, Nortel, Siemens, and ZTE.



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Over the past few years, the proliferation of the Internet and the rapid growth in volume of data being
sent over local and wide area networks has placed a tremendous strain on the communications infrastructure. The resulting demand for increased bandwidth has created a need for both faster as well as more expansive networks. Further, communication
service providers have sought to increase their revenues by delivering a growing range of data services to their customers in a cost-effective manner. Additionally, due to increasing needs for moving, managing and storing mission-critical data, the
market for storage equipment has been growing significantly. There has also been a growing trend by systems companies toward the outsourcing of IC design and manufacture to suppliers such as Vitesse. Beginning in late 2000, the communications
industry experienced a severe downturn due to the overbuilding of the communications infrastructure and excess inventories, among other reasons. While market conditions improved modestly between the end of fiscal 2002 and the third quarter of fiscal
2004, our revenues since then have been volatile due to the presence of excess inventories and reduced spending in some of our end markets. In spite of these difficult business conditions, we believe that the long-term prospects for the markets that
we participate in remain strong.



Significant Events



October 2005 Restructuring Program



In October 2005, we implemented a restructuring program to align our costs
with our projected revenues (the October 2005 Program). As a result of implementing this restructuring plan, we incurred a charge of $1.3 million in the quarter ended December 31, 2005. The October 2005 Program was comprised of the
following components:



Workforce reduction We
terminated 70 employees, which included 47 from engineering, research and development operations, 7 from manufacturing operations, 13 from sales and marketing and 3 from general and administrative functions. These employees were notified during
October 2005. The total charge for the workforce reduction was $1.3 million, with payments expected to be complete by the quarter ending March 31, 2006.



Excess Facilities  In connection with the October 2005 Program, we closed our Castle Rock, Colorado design center as of November 1,
2005. The charge of $23,000 consisted of the November 2005 rent and the lease buyout related to this facility.



Impairment of Assets The impairment of assets charge of $8,000 includes the write-down of certain excess fixed assets located at the Castle
Rock, Colorado location.



We have substantially completed the
activities contemplated by the October 2005 Program. The remaining severance payments are expected to be complete by March 2005.



A combined summary of our historical restructuring programs is as follows (in thousands):



|                              |  |                     |       |   |                   |   |       |                            |  |   |                      |   |  |       |    |   |  |   |        |  
|----------------------------- |  | ------------------- | ----- | - | ----------------- | - | ----- | -------------------------- |  | - | -------------------- | - |  | ----- | -- | - |  | - | ------ | -
|                              |  | Workforce Reduction |       |   | Excess Facilities |   |       | Contract Termination Costs |  |   | Impairment of Assets |   |  | Total |   
|Balance at September 30, 2005 |  | $                   |      |   |                   | $ | 1,169 |                            |  | $ | 851                  |   |  | $     |   |   |  | $ | 2,020  |  
|Charged to expense            |  |                     | 1,296 |   |                   |   | 23    |                            |  |   |                     |   |  |       | 8  |   |  |   | 1,327  |  
|Non cash amounts              |  |                     |      |   |                   |   |      |                            |  |   |                     |   |  |       | (8 | ) |  |   | (8     | )
|Cash payments                 |  |                     | (976  | ) |                   |   | (557  | )                          |  |   | (430                 | ) |  |       |   |   |  |   | (1,963 | )
|                              |  |                     |       |   |                   |   |       |                            |  |   |                      |   |  |       |    |   |  |   |        |  
|Balance at December 31, 2005  |  | $                   | 320   |   |                   | $ | 635   |                            |  | $ | 421                  |   |  | $     |   |   |  | $ | 1,376  |  
|                              |  |                     |       |   |                   |   |       |                            |  |   |                      |   |  |       |    |   |  |   |        |  



Contract termination
costs represent charges recorded in fiscal 2002 for purchase commitments related to unused licenses of non-cancelable software contracts and the residual value guaranteed under certain equipment operating leases. No additional charges were recorded
in the three months ended December 31, 2005.



Sale-leaseback



In December 2005, we sold a
building and land located in Camarillo, California, to a third party for total cash consideration of $6.0 million, less transaction expenses of $0.2 million. In addition, we entered into a lease agreement whereby we would leaseback this building
from the buyer for 10 years, commencing December 29, 2005. Pursuant to the lease agreement, the lessor held back $1.5 million of the consideration for the sale of the building for tenant improvements.



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As result of this transaction, we recorded a deferred gain of $2.9 million as of December 31, 2005, which will be amortized over the life of the lease
beginning in the quarter ending March 31, 2006.



Results of Operations



Revenues



Revenues in the first quarter of fiscal 2006 were $53.0
million, an increase of 19.2% from the $44.5 million recorded in the first quarter of fiscal 2005.



The increase in revenues between these periods was due to an overall increase in demand from our customers in all of the markets that we serve. In the
fourth quarter of fiscal 2004 and first quarter of fiscal 2005, we had experienced a significant decline in revenues due to the presence of excess inventories at our customers, who purchased significant quantities of semiconductor components in
anticipation of continued future growth in their end markets. During fiscal 2005, as these customer inventories started being consumed, our revenues grew in the second and third quarters but then declined sequentially in the fourth quarter of fiscal
2005. This decline was attributable to three factors. First, demand for our 2 Gb/s Fibre Channel products declined due to excess inventories at our customers, as well as the transition of storage systems from 2 Gb/s to 4 Gb/s. Secondly, the
projected revenue increase for our SAS products did not materialize due to difficulties experienced by some of our customers in procuring third-party components for the same SAS systems that our products are designed into. Finally, due to an
industry-wide shortage in assembly capacity, we were unable to obtain finished products from our assembly subcontractors in time to ship by the end of the fourth quarter. In the first quarter of fiscal 2006, we started seeing demand return to more
normal levels for our storage and networking products as described below. Additionally, compared to the first quarter of fiscal 2005, our Ethernet revenues have grown by approximately 100% from $4.5 million to $9.0 million.



Revenues from storage products were $15.0 million in the first quarter of
fiscal 2006, compared with $12.1 million in the first quarter of fiscal 2005. The increase in revenues was due to demand returning to more normal levels after undergoing a period of volatility caused by excess inventories at our customers and weaker
enterprise spending between the fourth quarter of 2004 and the fourth quarter of 2005.



Revenues from Ethernet products were $9.0 million in the first quarter of fiscal 2006, compared with $4.5 million in the first quarter of fiscal 2005. In the last few years we have increasingly focused on Ethernet
products targeting enterprise markets. For example, in fiscal 2001, we acquired Exbit, a developer of Ethernet switches and MACs, and in fiscal 2004, we acquired Cicada, whose physical layer products are principally targeted at customers in the
enterprise LAN space. Since our acquisition of Cicada, we have invested significant effort in combining our switch and physical layer technologies to develop an integrated single-chip product. In fiscal 2005 we introduced two integrated products to
the market and a significant part of the revenue increase that we saw in 2005 and continuing through the first quarter of 2006 is attributable to these products. We have also enhanced our marketing efforts by establishing a sales and marketing team
that is more focused on Ethernet products and customers.



Revenues from our networking products were $29.0 million in the first quarter of fiscal 2006, compared to $27.9 million in the first quarter of fiscal 2005. The increase in revenues from these products is due to a modest increase in
spending on telecommunications related equipment by communications carriers.



It is customary for product prices in the semiconductor industry to decline over time. Most of these price decreases are negotiated in advance and are usually based on increased volumes or the passage of time.
Semiconductor vendors can generally absorb price decreases without adversely impacting their gross margins through manufacturing efficiencies and more favorable overhead absorption resulting from increased production volumes.



Since fiscal 2001, many of our customers have restructured operations, cut
product development efforts, reduced excess component inventories and divested parts of their operations as a result of their clients fluctuating capital expenditure levels. We believe that even though the business environment of the markets
in which we participate has shown modest signs of improvement, the pattern of revenues for the remainder of fiscal 2006 may be volatile as a result of fluctuating customer demand forecasts and inventory levels.



Cost of Revenues



Our cost of revenues was $23.1 million in the first quarter of fiscal 2006
compared to $20.2 million in the first quarter of fiscal 2005. As a percentage of total revenues, cost of revenues was 43.5% in the first quarter of fiscal 2006 and 45.4% in the first quarter of fiscal 2005. The decrease in cost of revenues as a
percentage of total revenues was a result of increased revenues, and a decrease in manufacturing overhead costs due to decreased deprecation expense resulting from an impairment of long lived assets in fiscal year 2005. This reduction was slightly
offset by the share-based payment charge of



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##### Table of Contents

$0.2 million recorded in the first quarter of fiscal 2006. In the future, cost of revenues as a percentage of revenues may fluctuate as a result of changes
in demand for our products, the relative mix of products that we sell and other factors.



Engineering, Research and Development



Engineering, research and development expenses were $24.2 million in the first quarter of fiscal 2006 compared to $24.9 million in the first quarter of fiscal 2005. As a percentage of total revenues, engineering,
research and development expenses were 45.6% in the first quarter of fiscal 2006 and 55.9% in the first quarter of fiscal 2005. The decrease in absolute dollars from the same period last year was primarily the result of decreased amortization of
deferred and other acquisition-related compensation expense of $0.7 million as well as a decrease in employment related cost resulting from our recent restructuring. These decreases were partially offset by the increase in costs resulting from the
share-based payment charge of $1.8 million recorded in the first quarter of fiscal 2006. Our engineering, research and development costs are expensed as incurred.



Selling, General and Administrative



Selling, general and administrative expenses (SG&A) were $15.5 million in the first quarter of 2006,
compared to $11.8 million in the first quarter of 2005. As a percentage of total revenues, SG&A expenses were 29.3% in first quarter of fiscal 2006, compared to 26.6% in the first quarter of fiscal 2005. The increase in absolute dollars and as a
percent of total revenues from the three months ended December 31, 2004 was primarily due to the share-based payment charge of $1.8 million recorded in the first quarter of fiscal 2006, as well as increased expense for salaries, legal costs and
accounting fees related to Sarbanes-Oxley compliance.



Restructuring Costs



Restructuring costs were
$1.3 million in the first quarter of fiscal 2006. See further discussion in Significant Events.



Employee Stock Purchase Plan Compensation



We have an employee stock purchase plan for all eligible employees. During the first quarter of fiscal 2005, we recorded stock-based compensation expense
of $1.5 million related to certain shares purchased under the plan for the purchase interval ended January 31, 2005.See Note 1 of the Notes to the Consolidated Financial Statements, The Company and Its Significant Accounting
Policies for further discussion.



Amortization of
Intangible Assets



Amortization of other intangible assets
was $2.2 million in the first quarter of fiscal 2006, compared to $2.4 million in the first quarter of fiscal 2005. The decrease in amortization expense from the comparable period a year ago is the result of several of our identifiable intangible
assets that generated amortization expense in the three months ended December 31, 2004, now being fully amortized. This increase was offset by amortization expense related to our acquisitions of certain assets of Adaptec, Inc. and Infinera.



Interest Income



Interest income was $0.1 million in the first quarter of fiscal 2006
compared to $0.6 million in the first quarter of fiscal 2005. The decrease in interest income from the comparable period a year ago was the result of lower cash balances and short-term and long-term investments held throughout the period. The
decrease in cash and investment balances was primarily the result of the repurchase and redemption of our 2005 Debentures during the first quarter of fiscal 2005, as well as operating cash outflow.



Interest Expense



Interest expense was $0.7 million in the first quarter of fiscal 2006
compared to $1.6 million in the first quarter of fiscal 2005. The decrease in interest expense of $0.9 million from the first quarter of fiscal 2005 was primarily the result of the repurchase and redemption of $133.1 million of our 2005 Debentures,
partially offset by the interest accrued on the $96.7 million principal amount outstanding of our 2024 Debentures. Additionally, our coupon rate on our 2024 Debentures is significantly lower than that on our 2005 Debentures.



Other income



Other income was $0.1 million in first quarter of fiscal 2006 and $0.3
million in the first quarter of fiscal 2005. For the three months ended December 31, 2005, other income related to long-term equity investments that had previously been



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written off. For the three months ended December 31, 2004, other income consisted principally of amortization of deferred gains related to the
termination of our interest rate swap agreements entered into during fiscal 2003 and 2002.



Income Tax Expense



For
the first quarters of fiscal 2006 and 2005, our total effective income tax rate was 1.6% and 1.5%, respectively.



Liquidity and Capital Resources



At December 31, 2005, we had $29.1 million in cash, cash equivalents and short-term investments, which we refer to as cash and investments. Cash and
investments decreased by $2.9 million from $32.0 million as of September 30, 2005. This decrease was primarily due to $5.3 million of capital expenditures, $1.9 million for repayments of debt, and $2.0 million used by operating activities. The
decrease in our cash and investments was partially offset by $5.8 million in proceeds from the sale of fixed assets and $1.0 million in proceeds from stock issued pursuant to our employee stock purchase plan and stock option plan.



During the quarter ended December 31, 2005, we used $2.0 million of cash
in operating activities, primarily as a result of $50.4 million in receipts from customers, which were offset by $51.5 million in payments to vendors and employees and $0.9 million in interest payments. Cash receipts from customers decreased by $0.8
million from the $51.2 million in the quarter ended September 30, 2005 due to timing of payments made by customers. Payments to employees and vendors increased by $1.4 million from the $50.1 million in the quarter ended September 30, 2005,
primarily due to the timing of payments as well as severance payments made of $1.3 million under the October 2005 Program.



We have a $25 million unsecured revolving line of credit agreement with a bank, which expires in March 2006. Additionally, in December 2005, we received a
commitment letter from the bank to renew the line of credit, with a new expiration date of March 2007. The commitment is only subject to satisfactory loan documentation. The agreement provides for interest to be paid monthly at the banks prime
rate plus 100 basis points or Libor plus 350 basis points. We must adhere to certain requirements and provisions to be in compliance with the terms of the agreement and are prohibited from paying dividends without the consent of the bank.



We believe that our available cash, including our cash and
investments, and our revolving line of credit facility of $25 million, will be adequate to finance our operating needs for the next 12 months. However, we may not be able to generate cash or draw against our credit facility as expected, and our
ability to do so may be adversely affected by the risks discussed in Factors That May Affect Future Operating Results. If we are unable to generate sufficient cash flow to finance our operations, we may need to raise additional funds.
Depending on market conditions, we may also elect or be required to raise additional capital in the form of common or preferred equity, debt or convertible securities for the purpose of providing additional capital to fund working capital needs of
our existing business. Any such financing activity will be dependent upon many factors, including our liquidity needs, market conditions and prevailing market terms, and we cannot assure you that future external financing for us will be available on
attractive terms or at all.



Long Term Debt and Capital
Leases



Obligations under our long term debt and capital
leases, including principal and interest payments, as of December 31, 2005 are as follows (in thousands):



|                          |  |       |         |               |   |       |  |      |       |      |   |      |  |           |   |  |   |   |  |   |       
|------------------------- |  | ----- | ------- | ------------- | - | ----- |  | ---- | ----- | ---- | - | ---- |  | --------- | - |  | - | - |  | - | ------
|                          |  | Total |         | Remaining2006 |   | 2007  |  | 2008 |       | 2009 |   | 2010 |  | After2010
|Long-term debt            |  | $     | 96,700  |               | $ |      |  | $    |      |      | $ |     |  | $         |  |  | $ |  |  | $ | 96,700
|Capital lease obligations |  |       | 8,760   |               |   | 5,819 |  |      | 2,941 |      |   |     |  |           |  |  |   |  |  |   |      
|                          |  |       |         |               |   |       |  |      |       |      |   |      |  |           |   |  |   |   |  |   |       
|Total                     |  | $     | 105,460 |               | $ | 5,819 |  | $    | 2,941 |      | $ |     |  | $         |  |  | $ |  |  | $ | 96,700
|                          |  |       |         |               |   |       |  |      |       |      |   |      |  |           |   |  |   |   |  |   |       



Off-Balance Sheet
Arrangements



Our acquisition agreements with Cicada and
APT Technologies, Inc. obligate us to pay certain contingent cash consideration based on the continued employment of certain individuals and on the achievement of certain revenue milestones over the next three years. Compensation for continued
employment is being ratably accrued over the related period, and compensation for certain revenue milestones will be expensed if and when such milestones are achieved. As of December 31, 2005, total cash contingent compensation that could be
paid under these acquisition agreements assuming all contingencies are met is $1.3 million.



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We lease facilities and certain machinery and equipment under noncancellable operating leases that expire
through 2009. Approximate minimum rental commitments under all noncancellable operating leases as of December 31, 2005 are as follows (in thousands):



|                             |  |       |       |               |   |       |  |      |       |      |   |       |  |           |     |  |   |    |  |   |    
|---------------------------- |  | ----- | ----- | ------------- | - | ----- |  | ---- | ----- | ---- | - | ----- |  | --------- | --- |  | - | -- |  | - | ---
|                             |  | Total |       | Remaining2006 |   | 2007  |  | 2008 |       | 2009 |   | 2010  |  | After2010
|Operating Lease Obligations: |  |       |       |               |   |       |  |      |       |      |   |       |  |           |     |  |   |    |  |   |    
|Minimum Rental Payments      |  | $     | 5,587 |               | $ | 1,668 |  | $    | 1,612 |      | $ | 1,436 |  | $         | 488 |  | $ | 57 |  | $ | 326



Critical Accounting
Policies and Estimates



The preparation of financial
statements in accordance with U.S. generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of
net revenue and expenses during the reporting period. On an ongoing basis, we evaluate our estimates, including those related to our allowance for doubtful accounts and sales returns, inventory reserves, goodwill and purchased intangible asset
valuations, asset impairments, stock based compensation valuation and income taxes. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, the results of which form
the basis for making judgments about the carrying values of assets and liabilities. To the extent there are material differences between our estimates and the actual results, our future results of operations will be affected.



We believe the following critical accounting policies, among others, require
us to make significant judgments and estimates in the preparation of our consolidated financial statements:



Revenue Recognition, Sales Returns Reserve and Allowance for Doubtful Accounts



We recognize product revenue when the following fundamental criteria are met: (i) persuasive evidence of an arrangement
exists, (ii) the sales price is fixed or determinable, (iii), products are shipped to customers, which is when title and risk of loss transfers to the customers, and (iv) collection of the resulting accounts receivable is reasonably
assured. Revenue from development contracts is recognized upon attainment of specific milestones established under the customer contracts. Revenue from products deliverable under development contracts, including design tools and prototype products,
is recognized upon delivery. We record reductions to revenue for estimated product returns and pricing adjustments in the same period that the related revenue is recorded. The amount of these reductions is based on historical sales returns, analysis
of credit memo data and other known factors at the time. Additional reductions to revenue would result if actual product returns or pricing adjustments exceed our estimates. Certain of our product revenues are from a major distributor under an
agreement allowing for pricing credits and right of return on products unsold. Accordingly, we defer recognition of revenue on such products until the products are sold by the distributor to the end user. Customer purchase orders and/or contracts
are generally used to determine the existence of an arrangement. We assess whether a price is fixed or determinable based upon the payment terms and whether the sales price is subject to an adjustment. Shipping documents are used to verify product
shipment. We assess the collectibility of our accounts receivable based primarily upon the creditworthiness of the customer determined by credit checks and analysis, as well as customers payment history.



We also maintain an allowance for doubtful accounts for estimated losses
resulting from a customers inability to meet its financial obligations to us. If the financial condition of any of our customers were to deteriorate or if economic conditions were to worsen, additional allowances may be required in the future.



At December 31, 2005 our allowance for doubtful accounts
and sales returns was $3.0 million or 8.3% of gross receivables, compared to $2.6 million or 7.8% of gross receivables as of September 30, 2005. The increase in the reserve as a percentage of gross receivables from September 30, 2005, is
the result of an increase in the lag time from the point of sale to the date the returns occur.



Inventory Valuation



At each balance sheet date, we evaluate our ending inventories for excess quantities and obsolescence. This evaluation includes analyses of sales levels
by product and projections of future demand for our products within a specified time period, generally six months. The estimates we use for future demand are also used for near-term capacity planning and inventory purchasing and are consistent with
our revenue forecasts. If inventories on hand are in excess of forecasted demand, we provide appropriate reserves for such excess inventory. If we have previously recorded the value of such inventory determined to be in excess of projected demand,
or if we determine that inventory is obsolete, we write off these inventories in the period the determination is made. Remaining inventory balances are adjusted to approximate the lower of our actual manufacturing cost or market value on a
part-by-part basis. If future demand or market conditions are less favorable than our projections, additional inventory write-downs may be required, and would be reflected in cost of revenues in the period the revision is made.



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Valuation of Goodwill, Purchased Intangible Assets and Long-Lived Assets



The purchase method of accounting for acquisitions requires extensive
estimates and judgments to allocate the purchase price to the fair value of net tangible and intangible assets acquired, including in-process research and development (IPR&D). Goodwill and tangible assets deemed to have indefinite
lives are not amortized, but are subject to annual impairment tests. The amounts and useful lives assigned to other intangible assets affect future amortization, and the amount assigned to IPR&D is expensed immediately. The determination of the
fair values and useful lives of intangible assets, in particular, requires the exercise of judgment. While there are a number of different generally accepted valuation methods to estimate the value of intangible assets acquired, we primarily use the
discounted cash flow method. This method requires significant management judgment to forecast the future operating results used in the analysis. In addition, other significant estimates are required such as residual growth rates and discount
factors. If the assumptions and estimates used to allocate the purchase price are not correct, future asset impairment charges could be required.



In accordance with SFAS 142, we perform the two-step goodwill impairment test on an annual basis and on an interim basis if an event or circumstance
indicates that it is more likely than not that impairment has occurred. We assess the impairment of other amortizable intangible assets and long-lived assets whenever events or changes in circumstances indicate that the carrying value may not be
recoverable. Factors we consider important that could trigger an impairment review include significant underperformance to historical or projected operating results, substantial changes in our business strategy and significant negative industry or
economic trends. If such indicators are present, we compare the fair value of the goodwill of our only reporting unit to its carrying value. For other intangible assets and long-lived assets, in accordance with SFAS 144 we determine whether the
sum of the estimated undiscounted cash flows attributable to each asset in question is less than its carrying value. If less, we recognize an impairment loss based on the excess of the carrying amount of the assets over their respective fair values.
Fair value of goodwill is determined by using a valuation model based on a market approach. Fair value of other intangible assets is determined by undiscounted future cash flows, appraisals or other methods. Fair value of long-lived assets is
determined based on market value. If the long-lived asset determined to be impaired is to be held and used, we recognize an impairment charge to the extent the fair value attributable to the asset is less than the assets carrying value. The
fair value of the long-lived asset then becomes the assets new carrying value, which we amortize over the remaining estimated useful life of the asset. These approaches use significant estimates and assumptions, including projection and timing
of future cash flows, discount rates reflecting the risk inherent in future cash flows and long-term growth rates. It is reasonably possible that the estimates and assumptions used to value these assets may be incorrect. If our actual results, or
the estimates and assumptions used in future impairment analyses are lower than the original estimates and assumptions used to assess the recoverability of these assets, we could incur additional impairment charges. See note 6Goodwill
and Other Intangible Assets of the Notes to the Unaudited Condensed Consolidated Financial Statements for additional information.



For example, during the quarter ended September 30, 2005, we recorded a charge of $49.4 million for the write-down of certain test and manufacturing
equipment. To the extent we determine there are indicators of impairment in future periods, additional write-downs may be required.



Accounting for Stock Based Compensation



On October 1, 2005, we adopted the fair value recognition provisions of FASB Statement No. 123R, Share-Based Payment (SFAS
123R). Prior to October 1, 2005, we accounted for share-based payments under the recognition and measurement provisions of APB Opinion No. 25, Accounting for Stock Issued to Employees, and related Interpretations, as
permitted by FASB Statement No. 123, Accounting for Stock-Based Compensation (SFAS 123). In accordance with APB Opinion No. 25, no compensation cost was required to be recognized for options granted that had an exercise
price equal to the market value of the underlying common stock on the date of grant.



We adopted SFAS 123R using the modified-prospective-transition method. Under that transition method, compensation cost recognized in the quarter ended December 31, 2005, includes: i) compensation cost for all
share-based payments granted prior to, but not yet vested as of October 1, 2005, based on the grant-date fair value estimated in accordance with the original provisions of SFAS 123, and ii) compensation cost for all share-based payments granted
subsequent to October 1, 2005, based on the grant-date fair value estimated in accordance with the provisions of SFAS 123R. The results for prior periods have not been restated.



As a result of adopting SFAS 123R in the quarter ended December 31, 2005, our net income for the first quarter of
fiscal 2006 was $3.7 million lower than if we had continued to account for share-based compensation under APB Opinion No. 25 as we did in the comparable period a year ago. We have not recognized, and do not expect to recognize in the near
future, any tax benefit related to employee stock based compensation cost as a result of the full valuation allowance on our net deferred tax assets and our net operating loss carryforwards.



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Share-based compensation recognized in the financial statements by line item caption is as follows (in
thousands);



|                                          |  |                   |       |                   |   |      
|----------------------------------------- |  | ----------------- | ----- | ----------------- | - | -----
|                                          |  | December 31, 2005 |       | December 31, 2004
|Cost of revenues                          |  | $                 | 194   |                   | $ |     
|Engineering, research and development     |  |                   | 1,780 |                   |   | 674  
|Selling, general, and administrative      |  |                   | 1,761 |                   |   |     
|Employee stock purchase plan compensation |  |                   |      |                   |   | 1,468
|                                          |  |                   |       |                   |   |      
|Total share-based compensation expense    |  | $                 | 3,735 |                   | $ | 2,142
|                                          |  |                   |       |                   |   |      



The fair value of each
option award is estimated on the date of grant using the Black-Scholes option valuation model with the weighted average assumptions included in note 2 to our Unaudited Condensed Consolidated Financial Statements. The expected term of options granted
is derived from historical data on employee exercise and post-vesting employment termination behavior. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant.
Expected volatility is based on the historical volatility of our stock.



For options granted prior to October 1, 2005, and valued in accordance with SFAS 123, the expected volatility used to estimate the fair value of the options was based solely on the historical volatility of our stock; we used the
ratable vested method for expense attribution and we recognized option forfeitures as they occurred as allowed by SFAS 123.



For options granted after October 1, 2005, and valued in accordance with SFAS 123R, we used the ratable method for expense attribution, estimated
forfeitures and only recognized expense for those shares expected to vest. The estimated forfeiture rate in the first quarter of fiscal 2006, based on the historical forfeiture experience, is approximately 7.64%.



The Black-Scholes option valuation model requires the input of highly
subjective assumptions, including the expected life of the stock-based award and stock price volatility. The assumptions listed above represent managements best estimates, but these estimates involve inherent uncertainties and the application
of management judgment. As a result, if other assumptions had been used, the recorded and pro forma stock-based compensation expense could have been materially different from that depicted above and below. In addition, we are required to estimate
the expected forfeiture rate and only recognize expense for those shares expected to vest. If its actual forfeiture rate is materially different from its estimate, the share-based compensation expense could be materially different.



During September 2005, we accelerated the vesting of employee stock options
to purchase 3.8 million shares of common stock, with exercise prices greater than $5.27. Excluded from this action were any options granted in the prior twelve months and options held by outside directors. At the time of the action, our
reported Nasdaq National Market closing price was $1.87; therefore at the time of the acceleration of vesting there was no intrinsic value for those options affected. We believe that such options had limited economic value and were not offering
sufficient incentive to the employees when compared to the potential future expense of $6.8 million that would have been required to be recorded in future periods under FAS 123R had the options not been accelerated.



Accounting for Income Taxes



As part of the process of preparing our consolidated financial statements,
we are required to estimate our income taxes in each of the jurisdictions in which we operate. This process involves estimating our actual current tax exposure together with assessing temporary differences resulting from differing treatment of
items, such as deferred revenue, for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included in our consolidated balance sheet. We must then assess the likelihood that our deferred tax assets
will be recovered from future taxable income and to the extent we believe that recovery is not likely, we must establish a valuation allowance. To the extent we establish a valuation allowance or increase this allowance in a period, we must include
an expense within the tax provision in the statement of operations. As of December 31, 2005 all tax benefits are subject to a 100% valuation allowance.



Impact of Recent Accounting Pronouncements



In the first quarter of fiscal year 2005, the Company adopted SFAS No.151, Inventory Costs, an amendment of ARB 43, Chapter
4,(SFAS 151) which amends the guidance in ARB No. 43, Chapter 4, Inventory Pricing. This Statement is the result of a broader effort by the FASB working with the International Accounting Standards Board to
reduce differences between U.S. and international accounting standards. SFAS 151 eliminates the so abnormal criterion in ARB No. 43 and



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companies will no longer be permitted to capitalize inventory costs on their balance sheets when the production defect rate varies significantly from the
expected rate. It also makes clear that fixed overhead should be allocated based on normal capacity. The adoption of this Statement did not have a material effect on the financial statements of the Company.



In May 2005, the FASB issued Statement of Accounting Standard (SFAS)
No. 154, Accounting Changes and Error Corrections, a replacement of APB Opinion No. 20, Accounting Changes, and FASB Statement No. 3, Reporting Accounting Changes in Interim Financial Statements. This Statement requires
retrospective application to prior periods financial statements of a change in accounting principle. It applies both voluntary changes and to changes required by an accounting pronouncement if the pronouncement does not include specific
transition provisions. APB 20 previously required that most voluntary changes in accounting principles be recognized by recording the cumulative effect of a change in accounting principle. SFAS 154 is effective for fiscal years beginning after
December 15, 2005. The Company plans to adopt this statement on October 1, 2006. We are currently analyzing this statement and have not yet determined its impact on our consolidated financial statements.



Factors That May Affect Future Operating Results



We Have Experienced Continuing Losses from Operations Since
March 31, 2001, and We Anticipate Future Losses from Operations



We have experienced continuing losses from operations since our revenues peaked in the quarter ended December 31, 2000. Although our revenues have fluctuated since that time, in recent periods they have not been
sufficient to cover our operating expenses, and we anticipate future losses from operations as a result. Moreover, since fiscal 2001 our operating results have been materially and adversely affected by inventory write-downs, restructuring charges
and impairment charges. We may be required to take additional similar charges in the future, which could have a material and adverse effect on our operating results. Due to general economic conditions and slowdowns in purchases of networking
equipment, it has become increasingly difficult for us to predict the purchasing activities of our customers and we expect that our operating results will fluctuate substantially in the future. Future fluctuations in operating results may also be
caused by a number of factors, many of which are outside our control. Additional factors that could affect our future operating results include the following:



| |  |  | The loss of major customers;
| | - |  | ----------------------------



| |  |  | Variations, delays or cancellations of orders and shipments of our products;
| | - |  | ----------------------------------------------------------------------------



| |  |  | Increased competition from current and future competitors;
| | - |  | ----------------------------------------------------------



| |  |  | Reductions in the selling prices of our products;
| | - |  | -------------------------------------------------



| |  |  | Significant changes in the type and mix of products being sold;
| | - |  | ---------------------------------------------------------------



| |  |  | Delays in introducing new products;
| | - |  | -----------------------------------



| |  |  | Design changes made by our customers;
| | - |  | -------------------------------------



| |  |  | Failure by third-party foundries and other subcontractors to manufacture and ship products on time;
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | Changes in third-party foundries and other subcontractors manufacturing capacity, utilization of their capacity and manufacturing yields;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Variations in product development costs;
| | - |  | ----------------------------------------



| |  |  | Changes in our or our customers inventory levels;
| | - |  | --------------------------------------------------



| |  |  | Expenses or operational disruptions resulting from acquisitions; and
| | - |  | --------------------------------------------------------------------



| |  |  | Sale or closure of discontinued operations.
| | - |  | -------------------------------------------



For example, our customers high levels of inventory contributed to a significant decline in sales of our products in fiscal 2001, 2002, 2004 and in
the first and fourth quarters of fiscal 2005. In addition, in fiscal 2003 we decided to discontinue our line of optical module products and sell certain assets of that business, as a result of which our fiscal 2003 statements of operations and cash
flows reflect losses from discontinued operations associated with that business.



We implemented significant restructuring programs and cost reductions between fiscal 2001 and 2005, and in the first quarter of fiscal 2006, and we cannot assure you that we will not undertake further such actions in
the future. In addition, in



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the past we have recorded significant new product development costs because our policy is to expense these costs at the time that they are incurred. We may
incur these types of expenses in the future. These additional expenses may have a material and adverse effect on our operating results in future periods. The occurrence of any of the above-mentioned factors could have a material adverse effect on
our business and on our financial results.



We May Need to
Raise Additional Capital



We used $2.0 million of cash in
connection with our operations during the three months ended December 31, 2005, and we had $29.1 million in cash and investments at the end of that period. If we are unable to generate sufficient cash flow to finance our operations, we may need
to raise additional funds or curtail our operating activities. Depending on market conditions, we may elect or be required to raise additional capital in the form of common or preferred equity, debt or convertible securities to fund working capital
needs of our existing business. Any such financing activity will be dependent upon many factors, including our liquidity needs, market conditions and prevailing market terms, and we cannot assure you that future financing for us will be available on
attractive terms or at all. The issuance of new equity securities would dilute our existing stockholders, and the issuance of new debt securities would increase our interest expense and adversely impact our financial results.



If We Are Unable to Develop and Introduce New Products Successfully or to
Achieve Market Acceptance of Our New Products, Our Operating Results Will Be Adversely Affected



Our future success will depend on our ability to develop new high-performance integrated circuits for existing and new markets, introduce these products
in a cost-effective and timely manner and convince leading equipment manufacturers to select these products for design into their own new products. Our financial results in the past have been, and are expected in the future to continue to be,
dependent on the introduction of a relatively small number of new products and the timely completion and delivery of those products to customers. The development of new integrated circuits is highly complex, and from time to time we have experienced
delays in completing the development and introduction of new products. Our ability to develop and deliver new products successfully will depend on various factors, including our ability to:



| |  |  | Accurately predict market requirements and evolving industry standards;
| | - |  | -----------------------------------------------------------------------



| |  |  | Accurately define new products;
| | - |  | -------------------------------



| |  |  | Timely complete and introduce new products;
| | - |  | -------------------------------------------



| |  |  | Timely qualify and obtain industry interoperability certification of our products and our customers products into which our products will be incorporated;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Work with our foundry subcontractors to achieve high manufacturing yields; and
| | - |  | ------------------------------------------------------------------------------



| |  |  | Gain market acceptance of our products and our customers products.
| | - |  | -------------------------------------------------------------------



If we are not able to develop and introduce new products successfully, our business, financial condition and results of operations will be materially and
adversely affected. Our success will also depend on the ability of our customers to successfully develop new products and enhance existing products for the communications and storage markets. The communications and storage markets may not develop in
the manner or in the time periods that our customers anticipate. If they do not, or if our customers products do not gain widespread acceptance in these markets, our business, financial condition and results of operations will be materially
and adversely affected.



We Are Dependent on a Small Number
of Customers in a Few Industries



We intend to continue
focusing our sales efforts on a small number of customers in the communications and storage markets that require high-performance integrated circuits. Some of these customers are also our competitors.If any of our major customers were to
delay orders of our products or stop buying our products, our business and financial condition would be severely affected.



We Depend on Third Party Foundries and Other Suppliers to Manufacture Substantially All of Our Current Products



Wafer fabrication for the majority of our products is outsourced to
third-party silicon foundries such as IBM, LSI Logic, Taiwan Semiconductor Manufacturing Corporation, Chartered Semiconductor Manufacturing and United Microelectronics Corporation. As a result, we depend on third-party foundries to allocate a
portion of their manufacturing



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capacity sufficient to meet our needs and to produce products of acceptable quality in a timely manner. There are significant risks associated with our
reliance on third-party foundries, including:



| |  |  | The lack of assured wafer supply, the potential for wafer shortages and possible increases in wafer prices;
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | Limited control over delivery schedules, manufacturing yields, production costs and product quality; and
| | - |  | --------------------------------------------------------------------------------------------------------



| |  |  | The unavailability of, or delays in obtaining, access to key process technologies.
| | - |  | ----------------------------------------------------------------------------------



These and other risks associated with our reliance on third-party foundries could materially and adversely affect our
business, financial condition and results of operations. For example, the third-party foundries that manufacture our wafers have from time to time experienced manufacturing defects and reductions in manufacturing yields. In addition, disruptions and
shortages in foundry capacity may impair our ability to meet our customers needs and negatively impact our operating results. Our third-party foundries fabricate products for other companies and, in certain cases, manufacture products of their
own design. Historically, there have been periods in which there has been a worldwide shortage of foundry capacity for the production of high-performance integrated circuits such as ours. We do not have long-term agreements with any of our
third-party foundries, but instead subcontract our manufacturing requirements on a purchase order basis. As a result, although we believe that we currently have access to adequate foundry capacity to support our sales levels, it is possible that the
capacity we will need in the future may not be available to us on acceptable terms, if at all.



In addition to third-party foundries, we also depend on third-party subcontractors in the U.S. and Asia for the assembly and packaging of our products. In the past two quarters, we have experienced a lengthening in
total lead times and overall capacity shortages at our assembly subcontractors. As with our foundries, any difficulty in obtaining parts or services from these subcontractors could affect our ability to meet scheduled product deliveries to
customers, which could in turn have a material adverse effect on our customer relationships, business and financial results.



If We Do Not Achieve Satisfactory Manufacturing Yields or Quality, Our Business Will Be Harmed



The fabrication of integrated circuits is a highly complex and technically
demanding process. Defects in designs, problems associated with transitions to newer manufacturing processes and the inadvertent use of defective or contaminated materials can result in unacceptable manufacturing yields and performance. These
problems are frequently difficult to detect in the early stages of the production process and can be time-consuming and expensive to correct once detected. Even though we procure substantially all of our wafers from third-party foundries, we are
responsible for low yields when these wafers are probed.



In
the past, we have experienced difficulties in achieving acceptable yields on some of our products, particularly with new products, which frequently involve newer manufacturing processes and smaller geometry features than previous generations.
Maintaining high numbers of shippable die per wafer is critical to our operating results, as decreased yields can result in higher per-unit costs, shipment delays and increased expenses associated with resolving yield problems. Because we also use
estimated yields to value work-in-process inventory, yields below our estimates can require us to increase the value of inventory that is already reflected on our financial statements, and possibly the related reserves. In addition, defects in our
existing or new products may require us to incur significant warranty, support and repair costs, and could divert the attention of our engineering personnel away from the development of new products. As a result, poor manufacturing yields, defects
or other performance problems with our products could adversely affect our business and operating results.



Acquisitions May Be Difficult to Integrate, Disrupt Our Business, Dilute Stockholder Value or Divert the Attention of Our Management



Within the last several years we have made a series of acquisitions,
including a number of significant acquisitions. Our management frequently evaluates available strategic opportunities, and as a result we may pursue additional acquisitions of complementary products, technologies or businesses in the future. If we
fail to achieve the financial and strategic benefits of past and future acquisitions, including our acquisitions of certain technologies of Infinera, the Adaptec RAID on Chip (ROC) business, Cicada and Multilink, our business and operating results
will be materially and adversely affected. In undertaking future acquisitions we may:



| |  |  | Issue stock that would dilute the ownership of our then-existing stockholders;
| | - |  | ------------------------------------------------------------------------------



| |  |  | Reduce the cash available to fund operations or meet other liquidity needs;
| | - |  | ---------------------------------------------------------------------------



| |  |  | Incur debt; or
| | - |  | --------------



| |  |  | Assume other liabilities.
| | - |  | -------------------------



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For example, in connection with our acquisition of Versatile Optical Networks, Inc. in July 2001, we
issued approximately 8.8 million shares of our common stock valued at $148.8 million. In August 2003, we subsequently sold certain assets of this business for approximately $6.6 million and were required to recognize losses from discontinued
operations on our fiscal 2003 statements of operations and cash flows. Acquisitions also involve numerous other risks after they are completed, including:



| |  |  | Difficulties in integrating the acquired operations, technologies, products and personnel with ours;
| | - |  | ----------------------------------------------------------------------------------------------------



| |  |  | Failure to achieve targeted synergies;
| | - |  | --------------------------------------



| |  |  | Amortization expenses and impairment charges relating to intangible assets;
| | - |  | ---------------------------------------------------------------------------



| |  |  | Unanticipated costs and liabilities, including charges for the impairment of the value of acquired assets;
| | - |  | ----------------------------------------------------------------------------------------------------------



| |  |  | Diversion of managements attention from the day-to-day operations of our core business;
| | - |  | ----------------------------------------------------------------------------------------



| |  |  | Adverse effects on our existing business relationships with suppliers and customers or those of the acquired organization;
| | - |  | --------------------------------------------------------------------------------------------------------------------------



| |  |  | Difficulties in entering markets in which we have no or limited prior experience; and
| | - |  | -------------------------------------------------------------------------------------



| |  |  | Potential loss of key employees, particularly those of the acquired organizations.
| | - |  | ----------------------------------------------------------------------------------



In addition, acquisitions may result in substantial accounting charges. For example, in fiscal 2002 we recorded impairment
charges of $398.9 million associated with goodwill and other intangible assets related to past acquisitions. As of December 31, 2005, and after accounting for these impairment charges, we had an aggregate of $238.3 million of goodwill and other
intangible assets on our balance sheet. These assets may be written down in the future to the extent they are deemed to be impaired and any such write-downs would adversely affect our results of operations.



Our Industry Is Highly Competitive



The markets for our products are intensely competitive and subject to rapid
technological advancement in design technology, wafer-manufacturing techniques and alternate networking technologies. We must identify and capture future market opportunities to offset the rapid price erosion that characterizes our industry. We may
not be able to develop new products at competitive pricing and performance levels. Even if we are able to do so, we may not complete a new product and introduce it to market in a timely manner. Our customers may substitute use of our products in
their next-generation equipment with those of current or future competitors. In the communications market, which includes our Ethernet business, our competitors include Agere Systems, Applied Micro Circuits Corporation, Broadcom, Intel, Marvell,
Maxim Integrated Products, Mindspeed and PMC Sierra. In our storage markets, we principally compete against Emulex, LSI Logic, PMC Sierra and Qlogic. Over the next few years, we expect additional competitors, some of which may have greater financial
and other resources, to enter the market with new products. In addition, we are aware of smaller privately-held companies that focus on specific portions of our range of products. These companies, individually and collectively, represent future
competition for design wins and subsequent product sales.



We
typically face competition at the design stage, where customers evaluate alternative design approaches that require integrated circuits. Our competitors have increasingly frequent opportunities to supplant our products in next generation systems
because of shortened product life and design-in cycles in many of our customers products.



Competition is particularly strong in the market for communications and storage ICs, in part due to the markets historical growth rate, which
attracts larger competitors, and in part due to the number of smaller companies focused on this area. Larger competitors in our market have acquired both mature and early stage companies with advanced technologies. These acquisitions could enhance
the ability of larger competitors to obtain new business that Vitesse might have otherwise won.



Our International Sales and Operations Subject Us to Risks That Could Adversely Affect Our Revenue and Operating Results



Sales to customers located outside the U.S. have historically accounted for
a significant percentage of our revenue and we anticipate that such sales will continue to be a significant percentage of our revenue. International sales constituted 60%, and 56% of our total revenue in the first quarters of fiscal 2006 and 2005,
respectively. International sales involve a variety of risks and uncertainties, including risks related to:



| |  |  | Reliance on strategic alliance partners;
| | - |  | ----------------------------------------



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| |  |  | Compliance with changing foreign regulatory requirements and tax laws;
| | - |  | ----------------------------------------------------------------------



| |  |  | Difficulties in staffing and managing foreign operations;
| | - |  | ---------------------------------------------------------



| |  |  | Reduced protection for intellectual property rights in some countries;
| | - |  | ----------------------------------------------------------------------



| |  |  | Longer payment cycles to collect accounts receivable in some countries;
| | - |  | -----------------------------------------------------------------------



| |  |  | Political and economic instability;
| | - |  | -----------------------------------



| |  |  | Economic downturns in international markets.
| | - |  | --------------------------------------------



| |  |  | Changing restrictions imposed by U.S. export laws; and
| | - |  | ------------------------------------------------------



| |  |  | Competition from U.S. based companies that have firmly established significant international operations.
| | - |  | --------------------------------------------------------------------------------------------------------



Failure to successfully address these risks and uncertainties could adversely affect our international sales, which could in
turn have a material and adverse effect on our results of operations and financial condition.



We Must Keep Pace with Rapid Technological Change and Evolving Industry Standards



We sell products in markets that are characterized by rapid changes in both product and process technologies, including evolving industry standards,
frequent new product introductions, short product life cycles and increasing demand for higher levels of integration and smaller process geometries. We believe that our success to a large extent depends on our ability to adapt to these changes, to
continue to improve our product technologies and to develop new products and technologies in order to maintain our competitive position. Our failure to accomplish any of the above could have a negative impact on our business and financial results.
If new industry standards emerge, our products or our customers products could become unmarketable or obsolete, and we could lose market share. We may also have to incur substantial unanticipated costs to comply with these new standards.



Our Business Is Subject to Environmental Regulations



We are subject to a variety of federal, state and local
environmental regulations relating to the use, storage, discharge and disposal of toxic, volatile and other hazardous chemicals used in our design and manufacturing processes. In some circumstances, these regulations may require us to fund remedial
action regardless of fault. Consequently, it is often difficult to estimate the future impact of environmental matters, including the potential liabilities associated with chemicals used in our design and manufacturing processes. If we fail to
comply with these regulations, we could be subject to fines or be required to suspend or cease our operations. In addition, these regulations may restrict our ability to expand operations at our present locations or require us to incur significant
compliance-related expenses.



Due to environmental concerns,
the need for lead-free solutions in electronic components is receiving increasing attention within the semiconductor industry and many companies are moving towards becoming compliant with the Restriction of Hazardous Substances Directive, the
European legislation that restricts the use of a number of substances, including lead, effective July 2006. We believe that our products are compliant with the RoHS Directive and that materials will be available to meet these emerging regulations.
However, it is possible that unanticipated supply shortages or delays may occur as a result of these new regulations.



Our Failure to Manage Changes to Our Operations Infrastructure May Adversely Affect Us



Prior to fiscal 2001 we experienced a period of rapid growth and expanded
our operations and infrastructure accordingly. More recently, we implemented a series of restructuring plans between fiscal 2001 and 2005, and in the first quarter of fiscal 2006, that reduced this infrastructure. Throughout this period we have also
made a number of acquisitions. These changes have placed, and continue to place, a significant strain on our personnel, systems and other resources. Unless we manage these changes effectively, we may encounter challenges in executing our business,
which could have a material adverse effect on our business and financial results. Our recent restructuring efforts, in particular, may disrupt our operations and adversely affect our ability to respond rapidly to any renewed growth opportunities.



We Are Dependent on Key Personnel



Due to the specialized nature of our business, our success depends in part
upon attracting and retaining the services of qualified managerial and technical personnel. The competition for qualified personnel is intense. The loss of any of our key



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employees or the failure to hire additional skilled technical personnel could have a material adverse effect on our business and financial results.



If We Are Not Successful in Protecting Our Intellectual
Property Rights, It May Harm Our Ability to Compete



We
rely on a combination of patent, copyright, trademark and trade secret protections, as well as confidentiality agreements and other methods, to protect our proprietary technologies and processes. For example, we enter into confidentiality agreements
with our employees, consultants and business partners, and control access to and distribution of our proprietary information. We have been issued 73 U.S. patents and 4 foreign patents and have a number of pending patent applications. However,
despite our efforts to protect our intellectual property, we cannot assure you that:



| |  |  | The steps we take to prevent misappropriation or infringement of our intellectual property will be successful;
| | - |  | --------------------------------------------------------------------------------------------------------------



| |  |  | Any existing or future patents will not be challenged, invalidated or circumvented;
| | - |  | -----------------------------------------------------------------------------------



| |  |  | Any pending patent applications or future applications will be approved;
| | - |  | ------------------------------------------------------------------------



| |  |  | Others will not independently develop similar products or processes to ours or design around our patents; or
| | - |  | ------------------------------------------------------------------------------------------------------------



| |  |  | Any of the measures described above would provide meaningful protection.
| | - |  | ------------------------------------------------------------------------



A failure by us to meaningfully protect our intellectual property could have a material adverse effect on our business, financial condition, operating
results and ability to compete. In addition, effective patent, copyright, trademark and trade secret protection may be unavailable or limited in certain countries.



We May Be Subject to Claims of Infringement of Third-Party Intellectual Property Rights or Demands That We License
Third-Party Technology, Which Could Result in Significant Expense and Loss of Our Proprietary Rights



The semiconductor industry is characterized by vigorous protection and pursuit of intellectual property rights. As is common in the industry, from time to
time third parties have asserted patent, copyright, trademark and other intellectual property rights to technologies that are important to our business and have demanded that we license their patents and technology. To date, none of these claims has
resulted in the commencement of any litigation against us nor have we believed that it is necessary to license any of the rights referred to in such claims. We expect, however, that we will continue to receive such claims in the future, and any
litigation to determine their validity, regardless of their merit or resolution, could be costly and divert the efforts and attention of our management and technical personnel. We cannot assure you that we would prevail in such disputes given the
complex technical issues and inherent uncertainties in intellectual property litigation. If such litigation were to result in an adverse ruling we could be required to:



| |  |  | Pay substantial damages;
| | - |  | ------------------------



| |  |  | Discontinue the use of infringing technology, including ceasing the manufacture, use or sale of infringing products;
| | - |  | --------------------------------------------------------------------------------------------------------------------



| |  |  | Expend significant resources to develop non-infringing technology; or
| | - |  | ---------------------------------------------------------------------



| |  |  | License technology from the party claiming infringement, which license may not be available on commercially reasonable terms.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------



The Market Price for Our Common Stock Has Been Volatile and Future
Volatility Could Cause the Value of Your Investment in Our Company to Fluctuate



Our stock price has recently experienced significant volatility. In particular, our stock price declined significantly during fiscal 2004 and 2005 following announcements made by us and other semiconductor suppliers
of reduced revenue expectations and of a general slowdown in the technology sector. We expect that fluctuations in the demand for our products and our operating results will cause our stock price to continue to be volatile. In addition, the value of
your investment could decline due to the impact of any of the following factors, among others, upon the market price of our common stock:



| |  |  | Additional changes in financial analysts estimates of our revenues and operating results;
| | - |  | ------------------------------------------------------------------------------------------



| |  |  | Our failure to meet financial analysts performance expectations; and
| | - |  | ---------------------------------------------------------------------



| |  |  | Changes in market valuations of other companies in the semiconductor or networking industries.
| | - |  | ----------------------------------------------------------------------------------------------



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In addition, many of the risks described elsewhere in this section could materially and adversely affect
our stock price, as discussed in those risk factors. U.S. financial markets have recently experienced substantial price and volume volatility. Fluctuations such as these have affected and are likely to continue to affect the market price of our
common stock.



In the past, securities class action litigation
has often been instituted against companies following periods of volatility and decline in the market price of such companies securities. If instituted against us, regardless of the outcome, such litigation could result in substantial costs
and diversion of our managements attention and resources and have a material adverse effect on our business, financial condition and results of operations. We could be required to pay substantial damages, including punitive damages, if we were
to lose such a lawsuit.



Our Ability to Repurchase Our
Debentures, If Required, with Cash, upon a Change of Control May Be Limited



In certain circumstances involving a change of control or the termination of public trading of our common stock, holders of our 2024 Debentures may require us to repurchase some or all of the debentures. We cannot
assure that we will have sufficient financial resources at such time or will be able to arrange financing to pay the repurchase price of the debentures.



Our ability to repurchase the debentures in such event may be limited by law, by the indenture associated with the debentures, by the terms of other
agreements relating to our senior debt and by such indebtedness and agreements as may be entered into, replaced, supplemented or amended from time to time. We may be required to refinance our debt in order to make such payments. We may not have the
financial ability to repurchase the debentures if payment of our debt is accelerated. If we fail to repurchase the debentures as required by the indenture, it would constitute an event of default under the indenture governing the debentures which,
in turn, may also constitute an event of default under other of our obligations.



Our Operating Results May Fluctuate Significantly Due to the Embedded Derivative Associated with Our 1.5% Convertible Subordinated Debentures



In connection with the issuance of our 2024 Debentures, the requirement that we pay a make-whole premium in certain
circumstances upon the occurrence of a fundamental change constitutes an embedded derivative in accordance with SFAS No. 133, Accounting for Derivative Instruments and Hedging Activities,the value of which we are required to
mark-to-market each reporting period. Any fluctuations in the value of this embedded derivative would generally be reflected as interest expense or income in our results of operations. As a result, there may be material fluctuations in our results
of operations.



|Item 3. | Quantitative and Qualitative Disclosure About Market Risk
|------- | ---------------------------------------------------------



Cash Equivalents, Short-term and Long-term Investments



Cash equivalents and investments are principally composed of money market accounts, commercial paper rated A-1/P-1 and obligations of the U.S. government
and its agencies. Our investments are made in accordance with an investment policy approved by the Board of Directors. Maturities of these instruments are less than 30 months with the majority being within one year. We classify these securities as
held-to-maturity or available-for-sale depending on our investment intention. Held-to-maturity investments are recorded at amortized cost, while available-for-sale investments are recorded at fair value. We did not have any held-to-maturity
investments at December 31, 2005.



Investments in
fixed-rate, interest-earning instruments carry a degree of interest rate and credit rating risk. Fixed-rate securities may have their fair market value adversely impacted because of changes in interest rates and credit ratings. Due in part to these
factors, our future investment income may fall short of expectations because of changes in interest rates or we may suffer losses in principal if we were to sell securities that have declined in market value because of changes in interest rates.
Because of the nature of the issuers of the securities that we invest in, we do not believe that we have any cash flow exposure arising from changes in credit ratings.



Based on a sensitivity analysis performed on the financial instruments held as of December 31, 2005 and 2004, an
immediate 10% change in interest rates is not expected to have a material effect on our near-term financial condition or results of operations.



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Debt



In the normal course of business, our operations are exposed to risks associated with fluctuations in interest rates. We address this risk through
controlled risk management that includes the use of derivative financial instruments to economically hedge or reduce these exposures. We do not enter into financial instruments for trading or speculative purposes. The fair value of our debt is
sensitive to fluctuations in the general level of the U.S. interest rates. We have from time to time managed our interest expense by entering into interest rate swap agreements under which we exchange an obligation to make fixed debt payments for an
obligation to make floating rate payments that we anticipate will be lower. The gains and losses realized from interest rate swaps are recorded in Interest expense in the accompanying consolidated statements of operations.



In October 2004, in connection with the redemption of our 2005 Debentures, we
terminated our only remaining interest rate swap agreement with a notional value of $119.7 million for $0.6 million. Therefore, as of December 31, 2005, we did not have any interest rate swap agreements in place.



|Item 4. | Controls and Procedures
|------- | -----------------------



Disclosure Controls and Procedures



The
Companys Chief Executive Officer and Chief Financial Officer, after evaluating the effectiveness of the Companys disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange
Act of 1934, as amended) as of the end of the period covered by this report, have concluded that the Companys disclosure controls and procedures are effective and are designed to ensure that the information it is required to disclose is
recorded, processed, summarized and reported within the necessary time periods.



Internal Control over Financial Reporting



The Companys Chief Executive Officer and Chief Financial Officer have evaluated the changes to the Companys internal control over financial reporting that occurred during the quarter ended
December 31, 2005, as required by paragraph (d) of Rules 13a-15 and 15d-15 under the Securities Exchange Act of 1934, as amended, and have concluded that there were no such changes that materially affected or are reasonably likely to
materially affect the Companys internal control over financial reporting.



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PART II

OTHER INFORMATION



|Item 6. | Exhibits
|------- | --------



|     |  |                                                                                                                             
|---- |  | ----------------------------------------------------------------------------------------------------------------------------
|     | 
|31.1 |  | Certification of Chief Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934
|     | 
|31.2 |  | Certification of Chief Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934
|     | 
|32.1 |  | Certification Pursuant to 18 U.S.C Section §1350                                                                            



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SIGNATURES



Pursuant to the
requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.



VITESSE SEMICONDUCTOR CORPORATIONBy:

/s/ YATIN MODYYatin ModyVice President, Finance and Chief Financial Officer




February 7,
2006



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