JOINT FILING AGREEMENT
Exhibit
99.2
In
accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934,
as amended, the persons named below agree to the joint filing on behalf of each
of them that certain Amendment No. 6 to the Statement on Schedule 13D filed on
September 9, 2008 (including additional amendments thereto) with respect to the
shares of Common Stock, $.01 Par Value, of S1 Corporation. This Joint
Filing Agreement shall be filed as an Exhibit to such Statement.
Dated:
September 9, 2008
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STARBOARD
VALUE AND OPPORTUNITY
MASTER
FUND LTD.
By:
RCG Starboard Advisors, LLC,
its investment
manager
PARCHE,
LLC
By:
RCG Starboard Advisors, LLC,
its managing
member
RCG
XXXXXXX MASTER FUND, LTD.
By:
Ramius LLC,
its investment
manager
RCG
HALIFAX FUND, LTD.
By:
Ramius LLC,
its investment
manager
RAMIUS
FUND III, LTD
By:
Ramius Advisors, LLC,
its investment
manager
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RAMIUS
MASTER FUND, LTD.
By:
Ramius Advisors, LLC,
its investment
manager
RCG
ENTERPRISE, LTD
By:
Ramius LLC,
its investment
manager
RCG
STARBOARD ADVISORS, LLC
By:
Ramius LLC,
its sole member
RAMIUS
ADVISORS, LLC
By:
Ramius LLC,
its managing
member
By:
C4S & Co., L.L.C.,
as managing member
C4S
& CO., L.L.C.
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By:
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/s/
Xxxxxxx X. Xxxxxxx
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Name:
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Xxxxxxx
X. Xxxxxxx
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Title:
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Authorized
Signatory
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XXXXXXX
X. XXXXXXX
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/s/
Xxxxxxx X. Xxxxxxx
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/s/
Xxxxxxx X. Xxxxx
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Individually
and as attorney-in-fact for Xxxxx X. Xxxxx, Xxxxxx X. Xxxxx and Xxxxxx X.
Xxxxxxx
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XXXXXXX
X. XXXXX
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