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Exhibit 10.7

FIRST AMENDMENT to SUBLEASE AGREEMENT
DATED JANUARY 10, 2002

[Canopy Properties, Inc./ Caldera International, Inc.]

        This FIRST ADMENDMENT is entered into as of the Fifteenth (15th) day of
September 2003 between Canopy Properties, Inc. ("Tenant") and Caldera
International, Inc. ("Subtenant").

        Whereas Tenant and Subtenant entered into a Sublease dated January 10,
2002, Tenant and Subtenant hereby agree to amend the Sublease as follows:

        1.     The name of the Subtenant is hereby changed to The SCO Group.

        2.     Effective September 15, 2003, Tenant and Subtenant agree that
Tenant shall sublease the Premises for which Subtenant was to become responsible
effective March 1, 2004, to a third party subtenant for a period of
twelve months, renewable up to twenty-nine months, which would be the equivalent
time period of Subtenant's Sublease through Month forty-eight of Subtenant's
Sublease.

        Subtenant acknowledges that Tenant has entered into said third party
subtenant agreement at a market rate which is below Subtenant's obligated rate
for the same time period, and that Subtenant will be responsible for the
difference between it's rate and that of the new subtenant for the part of the
third party space that Subtenant is responsible for.

        The amounts of the rent reduction to Subtenant may vary during this time
period based on the amount of space the third party tenant occupies, and the
renewal rates negotiated at the times of renewal. The initial difference in rent
owed Tenant by Subtenant will be $18,750 annually from March 1, 2004 through
September 30, 2004, on 5,000 rentable square feet, reducing Subtenant's
obligations for this period from $708,756 annually to $626,255.

        3.     Provided that Subtenant elects to allow this third party
subtenant to further renew it's sublease on March 1, 2006, again acknowledging
that the third party subtenant will likely renew at a rate below Subtenant's
obligation, even though that renewal will be at market rates, since Subtenant
will at that time be paying off deferred rent in it's overall lease-payment
schedule, therefore Subtenant will continue to be responsible for the difference
in the two rates, the amount of which will be at least $29,112 annually from
March 2006 through February 2007, on 6,065 rentable square feet, should the
third party renewal be at their same rate for the now committed space. If the
third party renewal rate is higher, or if the third party subtenant should
sublease a larger part of the Additional Premises, the above obligation would be
reduced accordingly.

        All other terms, conditions and provisions of said Lease shall remain in
full force and effect.

LANDLORD:   TENANT: Canopy Properties, Inc.   The SCO Group
By:
 
/s/  BOYD WORTHINGTON      

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By:
 
/s/  WALTER HAMMOND      

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Its:
 
VP, Real Estate Development
 
Its:
 
Director, Operations

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FIRST AMENDMENT to SUBLEASE AGREEMENT DATED JANUARY 10, 2002