Document:

<PAGE>
                                                                   Exhibit 10.25

[INSIGHT LOGO]

December 18, 2001

CONFIDENTIAL

Mr. Michael Gumbert

VIA HAND DELIVERY

Copy to follow via Certified Mail:
----------------------------------
(Address omitted)

Re:  Notice of Termination

Dear Michael:

This letter serves as formal notice of the termination of your employment
with INSIGHT ENTERPRISES, INC. (including any and all positions with the
company and any affiliated entities, including each of its subsidiaries, all of
which are collectively referred to herein as the "Company") as well as any
employment agreement between you and the Company, including but not limited to
your Employment Agreement dated January 1, 2000, as amended May 17, 2001
(collectively, the "Employment Agreement"). Such termination shall be effective
as of March 18, 2002.

Effective immediately, the Company is placing you on paid administrative leave,
to be effective through the end of your employment. During this administrative
leave period, you are not to access the Company's offices or facilities except
by pre-appointment with me. Please promptly return to me all Company property
in your possession.

Securities Matters

Please note that you may possess material non-public information (as defined by
U.S. Securities and Exchange Commission regulations) with relation to Insight
Enterprises, Inc.'s stock. In accordance with SEC regulations, you are
prohibited from disclosing such information to any person outside of the
Company and from trading the Company's stock while you possess such information
until such time as the Company makes the information public or the information
becomes immaterial.

Continuing Obligations

Under the terms of your Employment Agreement and the Company's personnel
policies, you must maintain in confidence all privileged information you
acquired during your employment with the Company (including attorney-client
privilege, work product, and self-critical analysis privilege). You are also
obligated to keep confidential any trade or business secrets or proprietary
information you acquired.

<PAGE>
Michael Gumbert
December 18, 2001
Page 2
--------------------------------------------------------------------------------

during your employment, including financial data, information concerning the
Company's human resources or employment policies and/or practices, business or
marketing plans and/or personal information concerning the principals of the
Company.

Pursuant to your fiduciary obligations to the Company and Company personnel
policies, except as may be required by law or public policy, you may not
voluntarily communicate any adverse or derogatory information concerning or in
any way relating to the Company, its directors, principals, officers or its
employees to any persons, corporations or other entities by any means, including
written, oral or electronic (including Internet postings and e-mails).

Please also be reminded of any post-employment obligations set forth in your
Employment Agreement, which survive the termination of your employment and shall
be deemed incorporated herein by this reference.

Sincerely,

/s/ Timothy A. Crown

Timothy A. Crown
Chief Executive Officer
Insight Enterprises, Inc.<PAGE>
                                                                   Exhibit 10.26

December 20, 2001

Timothy A. Crown
Chief Executive Officer
Insight Enterprises, Inc.

VIA HAND DELIVERY

Dear Tim:

Thank you for agreeing to make an exception to Section 2.9 (Stock Trading) of
the Insight Enterprises, Inc. ("Insight") Personnel Manual, thereby allowing me
to trade Insight stock during an otherwise "closed" trading window. I
understand and agree that you may re-close my trading window at any time upon
written notice to me. Thank you for also allowing me to engage in open market
option trading activities with regard to my Insight stock options, which I
understand is also an exception to Insight's Stock Trading policy. I understand
and agree that the granting of these policy exceptions constitutes confidential
information, and I agree to hold this information in confidence pursuant to the
terms of my January 1, 2000 Employment Agreement, as amended by my May 17, 2001
Amendment to Employment Agreement (collectively, the "Agreement").

I hereby certify that I am in possession of no material non-public information
with regard to Insight or its stock. I understand and agree that, pursuant to
Securities and Exchange Commission regulations, I may not trade Insight stock
while I am in possession of material non-public information with regard to
Insight or its stock. I further understand and agree that, notwithstanding my
opened stock trading window, I am not to trade Insight stock in violation of
any law or regulation.

I understand and agree that I am and have been a Section 16 filer with regard
to Insight stock, and that I am subject to Section 16 trading and filing
obligations for six (6) months following my removal as a Section 16 filer.

I understand and agree that on the date of termination of my employment, March
18, 2002, my unvested stock options will vest and will be available for
exercise and the restrictions on my restricted stock will lapse. I further
understand and agree that all stock options that are not exercised by March 27,
2002 will lapse. I understand and agree that the stock option summary provided
to me on this date, attached hereto as "Exhibit A", is an accurate statement of
all of my stock options as of the date hereof. I understand and agree that the
restricted stock summary
<PAGE>
Timothy A. Crown
December 20, 2001
Page 2 of 2
--------------------------------------------------------------------------------

provided to me on this date, attached hereto as "Exhibit B", is an accurate
statement of all of my restricted stock as of the date hereof.

I understand and agree that the lump-sum Base Salary portion of the Severance
payout due to me on March 18, 2002 pursuant to the Agreement totals $277,708.32
and that I will also continue to receive my regular semi-monthly payroll
payments through March 18, 2002. I further understand and agree that the
Incentive Compensation portion of the Severance payout due to me on March 18,
2002 pursuant to the Agreement totals $1,040,698.75. I understand and agree that
all payments I receive from Insight are subject to withholding of applicable
taxes. I understand and agree that I may continue to participate in Insight's
employee benefits plans, pursuant to the terms of the Agreement. I understand
and agree that, provided Insight fulfills its obligations as stated in this
letter, no further payments are due to me under the Agreement and I have no
further claim against Insight with regard to the Agreement.

Sincerely,

/s/ Michael Gumbert

Michael Gumbert

AGREED TO AND ACCEPTED BY INSIGHT ENTERPRISES, INC.

By: /s/ Stanley Laybourne
   --------------------------------------
   Stanley Laybourne, Chief Financial Officer<PAGE>
EXHIBIT 10.18

October 4, 2001

Albert Irato
400 North Flagler Drive
Apt. 1602
West Palm Beach, FL  33401-4303

Dear Al:

This confirms the terms under which your employment at Hypercom will continue
after the expiration of your Employment Agreement on January 1, 2002.

1.       Position: Strategic Advisor to the Chairman and the CEO. In this
         position you will advise the Chairman and the CEO on strategic and
         industry matters as and when called upon to do so.

2.       Compensation and Benefits: You will be paid a salary of $500 per month
         in accordance with Hypercom's standard payroll practices and subject to
         legally required payroll deductions. Your health insurance benefits
         will continue with the standard health insurance package currently
         available to HYC executives and spouses.

3.       Business Expenses: You will be reimbursed in accordance with Hypercom's
         standard policies and practices for ordinary and necessary business
         expenses incurred by you in the course of your duties, including the
         costs of telephone service to your residence as currently borne by
         Hypercom.

4.       Confidentiality and Related Matters: You will continue to preserve
         Hypercom's confidential information, trade secrets and other items of a
         proprietary nature and will not advise or consult with any competitor
         of Hypercom.

5.       Term. This agreement will expire on December 31, 2002 unless extended
         by mutual agreement.

Please indicate your acceptance of this agreement in the space provided below.
This agreement shall become effective upon its approval by the Board of
Directors at its next scheduled meeting.

Very truly yours,

/s/ JONATHON E. KILLMER                                /s/ ALBERT IRATO
-----------------------                                -------------------------
Jonathon E. Killmer                                    Albert Irato
Executive Vice President                               Director

cc       George Wallner
         Christopher Alexander
         Tom Salamone
         Jock Patton<PAGE>
EXHIBIT 10.27

                               WAIVER AND CONSENT

This WAIVER AND CONSENT (this "Waiver and Consent") is entered into as of March
25, 2002, between and among, on the one hand, the lenders identified on the
signature pages hereof (such lenders, together with their respective successors
and assigns, are referred to hereinafter each individually as a "Lender" and
collectively as the "Lenders"), FOOTHILL CAPITAL CORPORATION, a California
corporation, as the arranger and administrative agent for the Lenders ("Agent"),
and, on the other hand, HYPERCOM CORPORATION, a Delaware corporation ("Parent"),
and each of Parent's Subsidiaries identified on the signature pages hereof (such
Subsidiaries are referred to hereinafter each individually as a "Borrower", and
individually and collectively, jointly and severally, as the "Borrowers"), with
reference to the following:

         A.       Borrowers and Parent previously entered into that certain Loan
                  and Security Agreement, dated as of July 31, 2001, as amended
                  by Amendment Number One to Loan and Security Agreement dated
                  October 3, 2001, by Amendment Number Two to Loan and Security
                  Agreement dated November 13, 2001, and by Amendment Number
                  Three to Loan and Security Agreement dated February 13, 2002
                  (as the same may be further amended, restated, supplemented,
                  or otherwise modified from time to time, the "Loan
                  Agreement"), with Agent and Lenders pursuant to which Lenders
                  have made certain loans and financial accommodations available
                  to Borrowers and Parent.

         B.       Parent recently consummated a private placement of its common
                  stock resulting in proceeds to Parent in excess of $35 million
                  (the "Private Placement").

         C.       Parent and Borrowers desire to pay off amounts outstanding
                  under the Wallner Replacement Note with proceeds received from
                  the Private Placement (the "Requested Transaction").

         C.       Subject to the terms and conditions contained herein, the
                  Lenders are willing to waive the provisions of the Loan
                  Agreement and applicable Loan Documents for which the above
                  Requested Transaction would prohibit or violate so long as the
                  Requested Transaction is consummated in accordance with the
                  terms and conditions set forth herein.

         E.       Terms used herein without definitions shall have the meanings
                  ascribed to them in the Loan Agreement.

NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
herein contained, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereby agree as
follows:

1.       Waiver and Consent. The Lenders hereby waive the provisions of the Loan
         Agreement and applicable Loan Documents that would prohibit or that
         would be violated by the payment and cancellation of the Replacement
         Wallner Notes ON THE CONDITION THAT the proceeds of the Private
         Placement are used to make such payment and cancellation and that such
         payment does not exceed $3.6 million.

2.       Conditions Precedent to Waiver and Consent. The satisfaction of each of
         the following, unless waived or deferred by Agent and Lenders in their
         sole discretion, shall constitute conditions precedent to the
         effectiveness of this Waiver and Consent and each and every provision
         hereof:

         (a)      Agent and Lenders shall have received this Waiver and Consent,
                  duly executed by the parties hereto, and the same shall be in
                  full force and effect;

         (b)      No Default or Event of Default shall have occurred and be
                  continuing on the date hereof, or shall result from the
                  consummation of the transactions contemplated herein;
<PAGE>
         (c)      Each of the representations and warranties contained in the
                  Loan Agreement shall be true and correct in all respects on
                  and as of the effectiveness hereof, as though made on and as
                  of such date except for such representations or warranties
                  that are made expressly as of an earlier date;

         (d)      No injunction, writ, restraining order, or other order of any
                  nature prohibiting, directly or indirectly, the consummation
                  of the transactions contemplated herein shall have been issued
                  and remain in force by any governmental authority against any
                  party hereto; and

         (e)      Agent and Lenders shall have received all expenses and costs
                  incurred by Agent and Lenders in entering into this Waiver and
                  Consent, including attorney's fees, then due and payable.

3.       Representations and Warranties. Parent and Borrowers each hereby
         represents and warrants to Agent and Lenders that:

         (a)      the execution, delivery, and performance of this Waiver and
                  Consent are within its corporate powers, has been duly
                  authorized by all necessary corporate action, and are not in
                  contravention of any law, rule, or regulation, or any order,
                  judgment, decree, writ, injunction, or award of any
                  arbitrator, court, or governmental authority, or of the terms
                  of its charter or bylaws, or of any contract or undertaking to
                  which it is a party or by which any of its properties may be
                  bound or affected;

         (b)      this Waiver and Consent constitutes a legal, valid, and
                  binding obligation, enforceable against it in accordance with
                  its terms; and

         (c)      this Waiver and Consent has been duly executed and delivered
                  by each such party.

4.       Miscellaneous.

         (a)      Counterparts; Telefacsimile Execution; Effectiveness. This
                  Waiver and Consent may be executed in any number of
                  counterparts, each of which, when so executed and delivered,
                  shall be deemed an original. All of such counterparts shall
                  constitute but one and the same instrument. Delivery of an
                  executed counterpart of this Waiver and Consent by
                  telefacsimile shall be equally effective as delivery of an
                  original executed counterpart of this Waiver and Consent. Any
                  party delivering an executed counterpart of this Waiver and
                  Consent by telefacsimile also shall deliver a manually
                  executed counterpart of this Waiver and Consent but the
                  failure to deliver a manually executed counterpart shall not
                  affect the validity, enforceability, and binding effect of
                  this Waiver and Consent.

         (b)      Choice of Law and Venue; Jury Trial Waiver. This Waiver and
                  Consent shall be governed by and construed in accordance with
                  the laws of the State of California. The parties hereto agree
                  that the provisions of Section 13 of the Loan Agreement are
                  hereby incorporated herein by this reference mutatis mutandis.

         (c)      Limited Agreement. The waivers, consents, and modifications
                  herein are limited to the specifics hereof, shall not apply
                  with respect to any facts or occurrences other than those on
                  which the same are based, shall not excuse future
                  non-compliance with the Loan Agreement, and except as
                  expressly set forth herein, shall not operate as a waiver or
                  an amendment of any right, power or remedy of Agent or
                  Lenders, nor as a consent to any further or other matter,
                  under the Loan Agreement.

                            [SIGNATURE PAGE FOLLOWS]
<PAGE>
         IN WITNESS WHEREOF, the parties hereto have caused this Waiver and
Consent to be executed and delivered as of the date first above written.

PARENT:

HYPERCOM CORPORATION,
a Delaware corporation

By:   /s/ JONATHON E. KILLMER
   --------------------------
Name:   Jonathon E. Killmer
Title:  Executive VP & COO

<TABLE>

<S>                                                          <C>
BORROWERS:

HYPERCOM U.S.A., INC.,                                       HYPERCOM MANUFACTURING RESOURCES, INC.,
a Delaware corporation                                       an Arizona corporation

By: /s/ JONATHON E. KILLMER                                  By:  /s/ JONATHON E. KILLMER
   --------------------------                                   -------------------------
Name:   Jonathon E. Killmer                                  Name:    Jonathon E. Killmer
Title:  Executive VP & COO                                   Title:   Secretary

HYPERCOM HORIZON, INC.,                                      EPICNETZ, INC.,
a Missouri corporation                                       a Nevada corporation

By: /s/ JONATHON E. KILLMER                                  By: /s/ JONATHON E. KILLMER
   --------------------------                                   --------------------------
Name:   Jonathon E. Killmer                                  Name:   Jonathon E. Killmer
Title:  Secretary                                            Title:  Secretary
</TABLE>
<PAGE>
Signature page to Waiver and Consent (continued)

<TABLE>

<S>                                                          <C>
BORROWERS (continued)

HYPERCOM LATINO AMERICA, INC.,                               HYPERCOM EMEA, INC.,
an Arizona corporation                                       an Arizona corporation

By: /s/ JONATHON E. KILLMER                                  By:   /s/ JONATHON E. KILLMER
   ------------------------                                     --------------------------
Name:   Jonathon E. Killmer                                  Name:     Jonathon E. Killmer
Title:  Secretary                                            Title:    Secretary

HYPERCOM (ARIZONA), INC.,
an Arizona corporation

By: /s/ JONATHON E. KILLMER
   --------------------------
Name:   Jonathon E. Killmer
Title:  Secretary

LENDERS:

FOOTHILL CAPITAL CORPORATION,
a California corporation, as Agent and as a Lender

By: /s/ JOHN NOCITA
   ---------------------------
Name:   John Nocita
Title:  Vice President
</TABLE>

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