SumTotal Partners with HP to Deploy First Learning and Talent Management System in Mainland China

Mountain View, Calif. – June 22, 2006 – SumTotal™ Systems (Nasdaq: SUMT), the largest provider of talent, learning and business performance technologies and services, and its partner HP Education Services, announced that Liaoning Mobile has purchased licenses for SumTotal’s TotalLMS 7.1. Liaoning Mobile is SumTotal’s first mainland China customer.

SumTotal’s solution is an enterprise software platform for managing talent as well as analyzing, storing and delivering learning. Liaoning Mobile, a wholly owned subsidiary of China Mobile Limited, will use the software, among other things, to instruct employees on job skills as well as compliance and regulatory issues. China Mobile Limited is the leading mobile services provider in mainland China.

“Liaoning Mobile plans to use solutions from HP Education Services and SumTotal as part of a major project to streamline its current operations,” said Wang Song, HP e-Learning business manager. “There is still considerable work to do before this project is completed. But once accomplished, we expect the SumTotal platform will be integrated with other software solutions to deliver education on a wide variety of topics.”

“Today’s announcement highlights the value of the partnership between SumTotal and HP,” said Don Fowler, chief executive officer of SumTotal. “We believe today’s news shows we’re making excellent progress with our strategic thrust to expand our international business into new markets.”

About SumTotal Systems

SumTotal Systems (NASDAQ: SUMT) is the largest provider of talent, learning and business performance technologies and services. SumTotal deploys mission-critical solutions that align talent and knowledge with business goals to generate significant bottom-line results. With more than 17 million users worldwide, SumTotal has helped accelerate performance and profits for more than 1,500 of the world’s best-known companies and government agencies including Accenture, Aetna, Cendant, DaimlerChrysler, Delta Air Lines, Harley-Davidson, Microsoft, Novartis, PNC Bank, U.S. Army, U.S. Air Force, U.S. Navy, U.S. Coast Guard, U.S. Bancorp, United Airlines, Vodafone, Wachovia and Wyeth. SumTotal has offices throughout the United States, in London, Paris, Singapore, Sydney, Tokyo, Hong Kong and Hyderabad, India. For more information about SumTotal's products and services, visit www.sumtotalsystems.com.

SumTotal and the SumTotal logo are trademarks or registered trademarks of SumTotal Systems, Inc. or its affiliates in the United States or other countries. Other names may be trademarks of their respective owners.

Safe Harbor Statement/ Forward-Looking Statements
This press release contains forward-looking statements. These statements represent SumTotal Systems' expectations or beliefs concerning future events. These statements are not historical facts or guarantees of future performance or events and are based on current expectations, estimates, beliefs, assumptions, goals and objectives, and involve known and unknown risks, uncertainties and other factors that may cause actual results to be materially different from the results expressed or implied by these statements. Readers of this press release are cautioned not to place undue reliance on any forward-looking statements. Additional factors that could cause actual results to differ include, but are not limited to (i) unknown errors or bugs in SumTotal TotalLMS 7.1; (ii) the inability to fix in a timely fashion unanticipated bugs, errors or defects that materially impact the functionality or usability of SumTotal TotalLMS 7.1; (iii) the acceptance of SumTotal TotalLMS 7.1 and future product offerings; (iv) the ability to successfully implement SumTotal Systems' solutions; (v) the ability to successfully address technological developments and standards; (vi) the ability to successfully manage growth, significant current and expected additional competition, and the need to continue to expand product distribution and services offerings; and (vii) other events and other important factors disclosed previously and from time to time in SumTotal Systems' filings with the Securities and Exchange Commission, including the annual report for fiscal year 2005 on Form 10-K filed March 28, 2006, and Form 8-Ks. The forward-looking statements contained in this release are made as of June 22, 2006, and SumTotal Systems does not assume any obligation to update such statements to reflect events or circumstances occurring after the date of this release.