Document:

<PAGE>
                                                                    EXHIBIT 10.6

                               EXTENSION AGREEMENT

     This Extension Agreement is entered into as of September 13, 2004 between
Silicon Valley Bank ("Silicon"), and First Virtual Communications, Inc ("First
Virtual") and Cuseeme Networks, Inc. ("Cuseeme") (First Virtual and Cuseeme
being referred to herein jointly and severally as "Borrower"), with reference to
the following facts:

     A.   Silicon and the Borrower are parties to that certain Loan and Security
Agreement dated April 3, 2003 (as amended, the "Loan Agreement") and that
certain Temporary Forbearance Agreement dated as of September 13, 2004 (the
"Forbearance Agreement"). (Capitalized terms used in this Agreement, which are
not defined herein, shall have the meanings set forth in the Forbearance
Agreement. The Loan Agreement, the Forbearance Agreement and all other present
and future documents, instruments and agreements relating thereto are referred
to herein collectively as the "Loan Documents".)

     B.   Borrower has requested an extension of the Forbearance Period, and
Silicon is willing to grant such extension on the terms and conditions set forth
herein.

     NOW, THEREFORE, THE PARTIES AGREE AS FOLLOWS:

1. Extension of Forbearance Period. Contingent on receipt of the principal
reduction referred to in Section 2 below, the date "September 21, 2004" in
Section 1.1 of the Forbearance Agreement is hereby amended to read "October 4,
2004", so that Section 1.1 reads as follows:

          " 1.1 Forbearance. Silicon agrees to forbear from exercising its
          rights and remedies against the Borrower, as a result of the Existing
          Defaults, until the earlier of the following dates (the `Forbearance
          Period'): (i) October 4, 2004, or (ii) the date any Additional Default
          shall occur. In agreeing to forbear from exercising its rights and
          remedies, Silicon is not waiving the Existing Defaults or any rights
          or remedies in connection therewith, all of which are expressly
          reserved. Upon the expiration of the Forbearance Period, Silicon may,
          at its option, exercise any and all rights or remedies in connection
          with the Existing Defaults, without further notice."

2. Principal Reduction. Borrower shall concurrently pay to Silicon the sum of
$500,000 to be applied to the Obligations in such order as Silicon shall
determine in its discretion.

3. No Commitment as to Further Extensions. Borrower acknowledges that Silicon,
by entering into this Agreement and discussing further forbearance and/or
restructuring with respect to the Loan Agreement, is not agreeing or committing
to any further extension of the Forbearance Period or any further forbearance
and/or restructuring with respect to the Loan Agreement, and no such agreement
or commitment shall be effective against Silicon unless set forth in a specific
written agreement signed by Silicon.

                                      -1-
<PAGE>

4. General Provisions.

     4.1. Incorporation by Reference. All of the general provisions in Section 5
of the Forbearance Agreement shall apply to this Agreement and the same are
incorporated herein by this reference.

     4.2. Agreements Continue. As modified herein, the Forbearance Agreement and
the other Loan Documents shall continue in full force and effect, and the same
are hereby ratified and confirmed.

     4.3. Governing Law; Forum Selection. This Agreement is being entered into
in the State of California. This Agreement shall be governed by the laws of the
State of California. As a material part of the consideration to the parties for
entering into this Agreement, each party (1) agrees that, at the option of
Silicon, all actions and proceedings based upon, arising out of or relating in
any way directly or indirectly to, this Agreement shall be litigated exclusively
in courts located within Santa Clara County, California, (2) consents to the
jurisdiction of any such court and consents to the service of process in any
such action or proceeding by personal delivery, first-class mail, or any other
method permitted by law, and (3) waives any and all rights to transfer or change
the venue of any such action or proceeding to any court located outside Santa
Clara County, California.

     4.4. MUTUAL WAIVER OF RIGHT TO JURY TRIAL. EACH PARTY TO THIS AGREEMENT
HEREBY WAIVES THE RIGHT TO TRIAL BY JURY IN ANY ACTION OR PROCEEDING BASED UPON,
ARISING OUT OF, OR IN ANY WAY RELATING TO: (I) THIS AGREEMENT OR ANY OF THE
OTHER LOAN DOCUMENTS; OR (II) ANY OTHER PRESENT OR FUTURE INSTRUMENT OR
AGREEMENT BETWEEN OR AMONG THEM; OR (III) ANY CONDUCT, ACTS OR OMISSIONS OF ANY
PARTY TO THIS AGREEMENT OR ANY OF THEIR DIRECTORS, OFFICERS, EMPLOYEES, AGENTS,
ATTORNEYS OR ANY OTHER PERSONS AFFILIATED WITH THEM; IN EACH OF THE FOREGOING
CASES, WHETHER SOUNDING IN CONTRACT OR TORT OR OTHERWISE.

"Borrower":                                   "Borrower":

Cuseeme Networks, Inc.                        First Virtual Communications, Inc

By: /s/ Truman Cole                           By: /s/ Truman Cole
   ----------------------------                   ------------------------------
   Title: VP/CFO                                  Title: VP/CFO

"Silicon":

Silicon Valley Bank

By: /s/ Cynthia A. Bitner
   -----------------------------
   Title: Vice President

                                      -2-<PAGE>
                                                                    EXHIBIT 10.1

                         EXECUTIVE EMPLOYMENT CONTRACT

         THIS AGREEMENT made as of September 27, 2004 by and between PMC
Commercial Trust, a Texas Real Estate Investment Trust with its principal places
of business in Dallas, Collin County, Texas, hereinafter referred to as the
"CORPORATION," and Lance B. Rosemore, hereinafter referred to as "EXECUTIVE."

                                WITNESSETH THAT:

         In consideration of the promises herein contained, the parties hereto
mutually agree as follows:

         1. Employment: The Corporation hereby employs the Executive as its
President and Chief Executive Officer with such powers and duties as may be
specified by the Board of Directors. The Executive hereby accepts employment
upon the terms and conditions as hereinafter set forth.

         2. Term: Subject to the provisions for termination as hereinafter
provided, the term of this Agreement shall begin immediately and shall terminate
on the earlier of (i) the Executive's seventieth (70th) birthday or (ii) July
31, 2007 or such later date as determined by the Board of Directors (the
"Term"). The Term of this Executive Employment Contract may be extended annually
by the Board of Directors.

         3. Compensation: For all services rendered by the Executive under this
contract, the Executive shall be paid an annual salary at a minimum at the
annual rate for the Executive effective as of September 30, 2004 (the "Minimum
Rate"). The Minimum Rate may be increased by the Board at its discretion. The
annual salary is payable pursuant to the normal payroll practices of the
Corporation.

<PAGE>

         The Board of Directors may consider bonus compensation for the
Executive if the performance of the Corporation and the Executive justifies such
bonus compensation.

         4. Authorized Expenses: The Executive is authorized to incur reasonable
expenses for the promotion of the business of the Corporation. The Corporation
will reimburse the Executive for all such reasonable expenses upon the
presentation by the Executive, from time to time, of an itemized account of such
expenditures.

         The Executive shall be entitled to such additional and other fringe
benefits as the Board of Directors shall from time to time authorize, including
but not limited to: A) health insurance coverage for the Executive, his wife and
dependent children; B) a monthly automotive allowance of $550, which the
Executive is to use to obtain an automobile to be available for company needs.
All operating expenses such as maintenance, insurance and fuel (excluding fuel
for company travel) will be the responsibility and expense of the Executive.

         5. Extent of Services: The Executive shall devote a substantial portion
of business time, attention and energies to the business of the Corporation, and
shall not, during the term of this Agreement, engage in any other business
activities, whether or not such activities are pursued for gain, profit or other
pecuniary advantage. This provision is not meant to prevent him from A) devoting
reasonable time to civic or philanthropic activities or B) investing his assets
in such form or manner providing that it does not require any substantial
services on the part of the Executive that will interfere with the Executive's
employment pursuant to this Agreement. Executive's employment is considered as
full-time.

         6. Working Facilities: The Executive shall be furnished with such
facilities and services suitable to his position and adequate for the
performance of his duties.

<PAGE>

         7.  Duties: The Executive is employed in an executive and supervisory
capacity and shall perform such duties consistent herewith as the Board of
Directors of the Corporation shall from time to time specify. Subject to the
provisions of Section 14 hereof, the precise services of the Executive may be
extended or curtailed, from time to time, at the discretion of the Board of
Directors of the Corporation.

         8.  Disclosure of Information: The Executive recognizes and
acknowledges that the Corporation's operating procedures or service techniques
are valuable, special and unique assets of the Corporation's business. The
Executive will not, during or after the term of his employment, disclose the
list of the Corporation's customer base or service techniques to any person,
firm, corporation, association or other entity for any reason or purpose
whatsoever. In the event of breach or threatened breach by the Executive of the
provisions of this paragraph, the Corporation shall be entitled to an injunction
restraining any such breach. Nothing herein shall be construed as prohibiting
the Corporation from pursuing any other remedies available to the Corporation
for such breach or threatened breach, including the recovery of damages from the
Executive.

         9.  Vacations: The Executive shall be entitled each year to a vacation
in accordance with the vacation contract addendum dated effective July 1, 1999.

         10. Disability: If the Executive is unable to perform his services by
reason of illness or total incapacity, based on standards similar to those
utilized by the U.S. Social Security Administration, he shall receive his full
salary for one (1) year of said total incapacity through coordination of
benefits with any existing disability insurance program provided by the
Corporation (a reduction in salary by that amount paid by any Corporation
provided insurance).

<PAGE>

Should said Executive be totally incapacitated beyond a one-year period, so that
he is not able to devote full time to his employment with said Corporation, then
this Agreement shall terminate.

         11. Death During Employment: If the Executive dies during the term of
employment and has not attained the age of seventy years, the Corporation and/or
any third party insurance provided by the Corporation, through a coordination of
benefits, shall pay the estate of the Executive a death benefit equal to two
times the Executive's annual salary. In the event the Executive receives death
benefits payable under any group life insurance policy issued to the
Corporation, the Corporation's liability under this clause will be reduced by
the amount of the death benefit paid under such policy. The Corporation shall
pay any remaining death benefits to the estate of the Executive over the course
of twelve (12) months in the same manner and under the same terms as the
Executive would have been paid if he had still been working for the Corporation.
No later than one (1) month from the date of death, the estate of the Executive
will also be paid any accumulated vacation pay. Such payments pursuant to this
paragraph shall constitute the full compensation of said Executive and he and
his estate shall have no further claim for compensation by reason of his
employment by the Corporation.

         12. Assignment: The acts and obligations of the Corporation under this
Agreement shall inure to the benefit of and be binding upon the successors and
assigns of the Corporation.

         13. Invalidity: If any paragraph or part of this Agreement is invalid,
it shall not affect the remainder of this Agreement but the remainder shall be
binding and effective against all parties.

         14. Additional Compensation: If during the Term, this Agreement is
terminated by the Corporation (other than pursuant to the provisions of Section
15 hereof) or by the Executive due to "Constructive Discharge" then the
Executive shall receive termination pay in an amount

<PAGE>

equal to 2.99 times the average of the last three years compensation. For
purposes of this Agreement, "Constructive Discharge" shall mean:

                  - Any reduction in salary below the Minimum Rate;

                  - A material change diminishing the Executive's job function,
                    authority, duties or responsibilities, or a similar change
                    deteriorating Executive's working conditions that would not
                    be in accordance with the spirit of this Agreement;

                  - A required relocation of Executive of more than 100 miles
                    from Executive's current job location; or requires Executive
                    to travel away from Executive's office in the course of
                    discharging Executive's responsibilities in excess of that
                    typically required of executives in similar positions.

                  - Any breach of any of the terms of this Agreement by the
                    Corporation which is not cured within 14 days following
                    written notice thereof by Executive to the Corporation.

The amount payable by the Corporation pursuant to this Section 14 shall be made
in one lump sum cash payment payable to the Executive no later than 30 days
following termination of this Agreement.

         15. Termination: The Corporation cannot terminate this agreement except
for: 1) the intentional, unapproved material misuse of corporate funds, 2a)
professional incompetence (i.e. the intentional refusal to perform or the
inability to perform the duties associated with Executive's position with the
Corporation in a competent manner, which is not cured within 15 days following
written notice to Executive) or 2b) willful neglect of duties or
responsibilities in

<PAGE>

either case not otherwise related to or triggered by the occurrence of any event
or events described in or prescribed by Section 14 hereof.

         16. Indemnification: The Corporation hereby agrees to indemnify and
hold the Executive harmless from any loss for any corporate undertaking, as
contemplated in Section 7 hereof, whereby a claim, allegation or cause of action
shall be made against the Executive in the performance of his contractual duties
except for willful illegal misconduct. Said indemnification shall include but
not be limited to reasonable cost incurred in defending the Executive in his
faithful performance of contractual duties.

         17. Entire Agreement: This contract may not be changed except in
writing and embodies the whole Agreement between the parties hereto and there
are no inducements, promises, terms, conditions or obligations made or entered
into by the Corporation or the Executive other than contained herein. This
Executive Employment Contract supercedes and replaces that certain Executive
Employment Contract dated September 17, 2003 between the Corporation and the
Executive.

         IN WITNESS WHEREOF, the parties here hereunto signed and sealed this
Agreement the date first above written.

Signed, Sealed and Delivered                "Corporation"
In the presence of:                         PMC Commercial Trust

/s/ Angela J. Sparks
    -------------------
                                            /s/ Andrew S. Rosemore
                                            ------------------------------
                                            By:   Andrew S. Rosemore
                                                  Executive Vice President

                                                  "EXECUTIVE"

/s/ Angela J. Sparks
    ----------------
                                            /s/ Lance B. Rosemore
                                            ------------------------------
                                            By:   Lance B. Rosemore,
                                                  President and Chief Executive
                                                  Officer

                                                  (CORPORATE SEAL)

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00072-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00072-of-00352.parquet"}]]