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ACI Worldwide Inc To Release September 2007 Quarter Financial Results

Conference Call Scheduled for November 29, 2007 at 4:30 pm EST

Tuesday, November 13, 2007

There will be an encore replay available for two weeks on (800) 642-1687 for US/Canada Dial-In and (706) 645- 9291 for International/Local Dial-In participants.

Notes to editors

About ACI Worldwide, Inc.

Every second of every day, ACI Worldwide solutions are at work processing electronic payments, managing risk, automating back office systems and providing application infrastructure services.   ACI is a leading international provider of solutions for banking, retail and cross-industry systems.  ACI serves more than 800 customers in 84 countries including many of the world's largest financial institutions, retailers and payment processors.  Visit ACI Worldwide at www.aciworldwide.com.