AMP, Buckman Laboratories, Humana and University Health System Win SumTotal’s ToolBook Awards

Mountain View, Calif. – September 8, 2006 – SumTotal® Systems (NASDAQ: SUMT) announced that AMP, Buckman Laboratories, Humana (NYSE: HUM) and University Health System have won this year’s ToolBook™ Design Awards for outstanding use of SumTotal’s simulation and interactive content authoring solution.

ToolBook helps companies create content and simulations that are critical to the success of learning and development. With ToolBook, organizations can craft professional, standards-based simulations, tutorials, assessments, courses and other content without in-depth programming skills.

The ToolBook Design Awards were given at this year’s TBCON 2006, the annual SumTotal-sponsored gathering of ToolBook users, held in Colorado Springs from June 17-21. Platte Canyon Multimedia Software, a leading value-added reseller of ToolBook in the United States, serves each year as host for TBCON.

“The ToolBook Design Awards acknowledge the innovative work our customers have accomplished with ToolBook,” said Brad Crain, SumTotal’s vice president of ToolBook. “It was great to see a record number of submissions this year from our customers around the globe, including Australia, Canada, Indonesia, Pakistan, Thailand and the United States.”

SUMMARY OF WINNERS

AMP – Best International Training
Mr. Ryan Tracey of AMP, a leading wealth management company serving Australia and New Zealand, developed "Product Awareness – Retail Superannuation" to improve employees' knowledge of key financial services products. One important feature addressed the “Payments In – Payments Out” model, which allows the learner to explore each step of the money flow.

“ToolBook let me easily create a visually attractive, interactive, online course that not only met training industry standards but also met the learners’ expectations,” explained Tracey.

Buckman Laboratories – Best Native Application
Buckman Laboratories, with an effort led by Mr. Mauro Rech, created “New Employee Orientation” training with ToolBook to provide new hires with a more efficient way to learn about their organization. Tasked with delivering ever-changing information to a global audience, Rech used CD-ROM delivery with an auto update capability to refresh corporate data on the fly, while minimizing network connection time. Buckman sent training CDs to employees all around world instead of flying them to corporate headquarters for training. Rech’s solution was impressive because of its level of personalization and ability to address employees’ need for timely and relevant new-hire information.

Humana – Best ToolBook Productivity Solution
Mr. Robert Dick and Dr. William J. Ryan share the award for Best ToolBook Productivity Solution. Their solution guides owners of training content through the development process, so developers can determine the appropriate medium for the delivery of learning. Dick and Ryan’s solution analyzes data, calculates ROI and offers recommendations on delivery media.

University Health System – Best Online Training
This award recognizes courseware deployed in HTML that demonstrates the power of ToolBook to create engaging and effective training content. University Health System’s Mr. Don Bair used ToolBook to create a course about an instrument called the GemStar Pump, which dispenses pain medication at the patient’s bedside.

Portions of the winning entries can be seen in the e-learning showcase at www.toolbook.com. Winners received an award certificate as well as an Apple iPod.

About SumTotal Systems, Inc.

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, Frankfurt, 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 ToolBook Instructor or ToolBook Assistant; (ii) the inability to fix in a timely fashion unanticipated bugs, errors or defects that materially impact the functionality or usability of the ToolBook suite of products; (iii) the acceptance of ToolBook Instructor and ToolBook Assistant and future product offerings; (iv) the ability to successfully implement SumTotal Systems' solutions; (v) the ability to successfully translate the implementation of ToolBook Instructor and/or ToolBook Assistant into efficiency gains, (vi) the ability to successfully address technological developments and standards; (vii) 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 (viii) 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 company’s annual report for fiscal year 2005 on Form 10-K filed March 28, 2006, the company’s quarterly report on Form 10-Q filed on August 8, 2006, and its Form 8-Ks. SumTotal Systems assumes no obligation to update the information in this press release