Exhibit 10(b)

SURRENDER OF LEASE

          DATE:   September 9, 2003               BETWEEN:   7700 FRANCE AVENUE
LLC
a Minnesota limited liability company   (“Landlord”)           AND:   NET
PERCEPTIONS, INC. a Delaware corporation   (“Tenant”)

LANDLORD AND TENANT hereby agree as follows:

1.   In this Surrender of Lease:

  (a)   “Lease” means the Office Lease Agreement between DRF Holdings LLC and
Tenant dated April 5, 2000, as amended by First Amendment to Office Lease
Agreement dated June 7, 2000, Second Amendment to Office Lease Agreement dated
September 12, 2000, and Third Amendment to Office Lease Agreement dated
April 30, 2001.

  (b)   “Building” means 7700 France Avenue South located in the city of Edina,
Minnesota.

  (c)   “Premises” means 125,800 square feet of Rentable Area on the first,
second, fourth and fifth floors of the Building, as set out in the Lease.

  (d)   “Office Furniture” means the office furniture leased by Tenant from
Landlord as set out in the Lease.

  (e)   “Surrender Date” means the business day written approval of this
Surrender of Lease is received from the holder of the mortgage on the Building
or one business day later.

2.   Subject to each party performing its obligations hereunder, Tenant hereby
surrenders and yields up the Lease, the Premises and the Office Furniture to
Landlord from and after the Surrender Date for the unexpired portion of the term
of the Lease, and Landlord hereby accepts this surrender of the Lease, the
Premises and the Office Furniture from and after the Surrender Date.

3.   Tenant shall promptly quit and surrender possession of the Premises and
surrender the Office Furniture to Landlord on the Surrender Date in good order
and condition, reasonable wear and tear excepted. Tenant will be responsible for
any damage to the Premises or the Building arising from Tenant’s removal of its
personal property, equipment, furniture and trade fixtures from the Premises.
Subject to the provisions of Section 10 herein, any property of Tenant not
removed from the Premises on or before the Surrender Date shall be and become
the property of Landlord absolutely.

 

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4.   Subject to Sections 10 and 11 and the truth of the representations in
Section 6 and 12 herein, and the truth of the representations in Section 4 of
the Assignment of Leases attached as Exhibit A, upon surrender of the Premises
and vacation of the Premises by Tenant, payment of the Surrender Payment
(defined below), and performance of Tenant’s other obligations under this
Surrender of Lease: a) The Lease will terminate and be of no further force and
effect; and b) Tenant shall be released by Landlord from any and all now
existing or hereafter arising obligations, liabilities and claims of any kind or
character under the Lease or otherwise arising from or in connection with the
use or occupancy of the Premises, whether known or unknown which may or could be
asserted against the Tenant by Landlord (“Tenant Claims”); and c) Landlord shall
be released by Tenant from any and all now existing or hereafter arising
obligations, liabilities and claims of any kind or character under the Lease or
otherwise arising from and in connection with the use or occupancy of the
Premises, Building, or Common Area whether known or unknown which may or could
be asserted against the Landlord by the Tenant. The parties agree that Landlord
will have no right to assess Tenant for more Additional Rent if the Estimated
Operating Cost or Estimated Tax Cost is less than the actual Operating Cost or
Tax Cost nor shall Tenant be entitled to a reimbursement of Additional Rent if
the Estimated Operating Cost or Estimated Tax Cost is greater than the actual
Operating Cost or Tax Cost.

5.   Tenant covenants with Landlord that Tenant has in itself the absolute
right, power and authority to surrender the Lease, the Premises and the Office
Furniture as provided herein, and that Tenant has not taken any action whereby
the Lease or the unexpired portion of the term of the Lease, or the Premises or
Office Furniture, is or may be charged, encumbered or assigned. Subject to
obtaining the written approval of this Surrender of Lease from the holder of the
mortgage on the Building, Landlord hereby indemnifies and holds harmless Tenant
against any cost incurred by Tenant as a result of any claim that Landlord does
not have in itself the absolute right, power and authority to accept the
surrender of the Lease, the Premises and the Office Furniture as provided
herein. Tenant hereby indemnifies and holds harmless Landlord against any cost
incurred by Landlord as a result of a claim that Tenant does not have in itself
the absolute right, power and authority to surrender the Lease, the Premises and
the Office Furniture as provided herein.

6.   Tenant represents and warrants to Landlord that there has been no labor or
materials furnished to the Premises by or on behalf of Tenant for which full
payment has not been made.

7.   In consideration of Landlord’s acceptance of this Surrender of Lease and
the forgiveness of rent and all other Lease obligations, and as a condition
thereto, Tenant shall pay to Landlord by no later than the Surrender Date the
sum of $4,930,000 in immediately available funds (“Surrender Payment”).

8.   On the Surrender Date, Tenant will assign to Landlord and Landlord will
accept an assignment of the subleases between Tenant and Winstorage, Inc.,
Verispace LLC, Conagra Foods, Inc. and Great Clips as and to the extent such
subleases have been or are hereafter approved by Landlord and any personal
guaranties of such subleases. The assignment of the subleases will be in the
form attached as Exhibit A.

9.   On the Surrender Date, Landlord will release and transfer to Tenant 100% of
the Security Deposit made pursuant to the Lease. Tenant shall pay to Landlord on
the

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    Surrender Date any cash security deposits and transfer any letter of credit
to Landlord by way of an amendment of a letter of credit from the issuer of the
letter of credit. Tenant represents and warrants that the security deposits are
as follows:

          (a)   Great Clips   $37,110 letter of credit (b)   Conagra Foods, Inc.
  $0 (c)   Winstorage, Inc.   $2,000 (d)   Verispace, LLC   $41,625.25

10.   Notwithstanding anything herein to the contrary, Tenant may elect to hold
over in that portion of the Premises shown on Exhibit B (“Holdover Premises”)
containing approximately 3,000 square feet of Rentable Area on a month-to-month
basis, subject to termination by either Landlord or Tenant on not less than one
month’s advance written notice. The month-to-month holdover will be on all terms
of the Lease to the extent they are applicable to a month-to-month occupancy,
except that (i) no Base Rent will be payable by Tenant for the holdover period,
but Tenant will pay Additional Rent and any other charges payable under the
Lease for the holdover period for the useable space occupied by Tenant in the
Holdover Premises plus 15% (and such Additional Rent will not be limited by any
Operating Cost Cap), (ii) Tenant will be responsible for all costs of
constructing or altering any demising walls and other improvements necessary to
separate the holdover space from the Premises surrendered on the Surrender Date
and otherwise preparing the holdover space for occupancy, and (iii) the rights
of Tenant under Exhibit E of the Lease will not apply to the holdover space and
will be of no further force or effect.

11.   In the event that a court requires the payment set forth in Section 7 to
be disgorged because of insolvency or bankruptcy of Tenant or for any other
reason, then the parties shall be restored to the position they were in before
surrender of the Lease, subject to any subleases whether executed before
surrender of the Lease or afterwards by the Landlord, and the Lease shall be
declared valid and enforceable.

12.   Tenant Representations. Tenant represents and warrants to Landlord that to
the best knowledge of the Tenant (a) Tenant is not insolvent and will not be
made insolvent by the payment required by this agreement, (b) Tenant has not
breached Section 14(d) of the Lease relating to dangerous, toxic or hazardous
substances nor received any claims described in Section 14(e) of the lease
relating to such dangerous, toxic or hazardous substances, (c) Tenant has not
received any written claims for personal or property damage relating to the
Premises or any condition of the Premises or Common Areas (as defined in the
Lease), (d) Tenant has not received any written notice from any governmental
body or agency or any insurance company requiring changes to the Premises or
Common Areas, (e) there are no unpaid Tenant obligations which could if not paid
entitle a third party to a lien on the property on which the Premises are
located. All representations and warranties set forth in this agreement shall be
deemed made effective as of the Surrender Date unless disclaimed in writing by
Tenant by notice delivered to Landlord at the time of Tenant making its payment
required by Section 7 of this Surrender of Lease. If Tenant disclaims any
representation and warranty, Landlord may declare this Surrender of Lease null
and void. As used herein, the term “best knowledge of the Tenant” means and the
above representations are therefore limited to

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    the actual knowledge of Thomas Donnelly who has responsibility for
facilities management for Tenant. The representations in this agreement shall
survive the surrender of the Lease for a period of six (6) months from the date
of this document.

13.   This Surrender of Lease shall be binding on the heirs, administrators,
successors and assigns (as the case may be) of the parties hereto.

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IN WITNESS OF THIS SURRENDER OF LEASE Landlord and Tenant have properly executed
it as of the date set out at its head.

              LANDLORD:   7700 FRANCE AVENUE LLC                   By   /s/
David Frauenshuh            

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            its Manager       TENANT:   NET PERCEPTIONS, INC.                  
By   /s/ Thomas M. Donnelly            

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            its President    

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EXHIBIT A

ASSIGNMENT OF SUBLEASES

          DATE:   September 9, 2003               BETWEEN:   NET PERCEPTIONS,
INC.
a Delaware corporation   (“Tenant”)           AND:   7700 FRANCE AVENUE LLC
a Minnesota limited liability company   (“Landlord”)

TENANT AND LANDLORD hereby agree as follows:

1.   Tenant hereby assigns, transfers, and conveys to Landlord all of Tenant’s
right, title and interest in and to the subleases and any guaranties of the
obligations thereunder, as described in Exhibit 1 attached hereto (“Subleases”),
and any security deposits, escrows and prepaid rent under the Subleases.

2.   Landlord hereby accepts all of Tenant’s right, title and interest in and to
the Subleases, and assumes each and every of Tenant’s covenants and obligations
under the Subleases as though Landlord were named as party therein.

3.   Tenant covenants with Landlord that Tenant has in itself the absolute
right, power and authority to assign the Subleases as provided herein, and that
Tenant has not taken any action hereby the Subleases are or may be charged,
encumbered or assigned.

4.   Tenant represents and warrants that to the best knowledge of Tenant (a)
true, complete and correct copies of the Subleases have been provided by Tenant
to Landlord and each such Sublease represents the entire agreement between
Tenant and its subtenants, has not been modified or amended in any respect, and
is in full force and effect in accordance with its terms, (b) no rent or other
amounts owing by the subtenants under the Subleases have been paid in advance of
their due date, no deposits have been made by any of the subtenants to Tenant in
respect of any sublease except for security deposits delivered to Landlord
herewith, and no subtenant has made any charge, lien or claim of offset under
the Sublease or otherwise against the rent or other amounts due Tenant under any
Sublease, (c) neither Tenant nor, to the best of Tenant’s knowledge, any
subtenant is in default of any of the Subleases and no event has occurred which
with the giving of notice or lapse of time or both would be an event of default
under the Subleases, nor has any claim or demand been raised or threatened or
defense asserted against Tenant in connection with any of the Subleases, and
(d) Tenant has completed all construction work required under the Subleases and
performed all of its other obligations under the Subleases arising or accruing
prior to the date hereof. As used herein the term “best knowledge of Tenant”
means and the above representations are therefore limited to the actual
knowledge of Thomas Donnelly who has responsibility for facilities management
for Tenant. The representations in this assignment shall survive the assignment
of the subleases for a period of six (6) months from the date of this document.

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IN WITNESS WHEREOF, Tenant and Landlord have duly executed this instrument as of
the date set out at its head.

              TENANT:   NET PERCEPTIONS, INC.                   By   /s/ Thomas
M. Donnelly            

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            its President                   LANDLORD:   7700 FRANCE AVENUE LLC  
                By   /s/ David Frauenshuh            

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            its Manager    

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