FOR IMMEDIATE RELEASE

Apax Partners Makes Strategic Investment in Corum Client Plexus Systems

Bellevue Washington August 16, 2006 - Corum Group is pleased to announce the recent strategic investment in its client, Plexus Systems, by Apax Partners. Plexus Systems offers a broad suite of applications that automate business processes for discrete manufacturers. The company employs an on-demand, or Software as a Service (SaaS), delivery model that allows its single, standard code base to be accessed and shared by multiple customers via the Internet.

According to Corum President Ward Carter, Plexus has been hugely successful in addressing the needs of this market, as evidenced by their significant growth and fierce customer loyalty. When it came time for the shareholders to survey their options, there were many strategic and financial players who were anxious to participate. A combination of strong sector expertise, flexibility on structure, and the ability to act quickly weighed strongly on the decision to work with Apax.

The Plexus Online™ offering is the only on-demand suite of applications that automate the business processes of mid-market discrete manufacturers, principally within the mission-critical areas of Manufacturing Execution Systems (MES) and Enterprise Resource Planning applications (ERP). As a true manufacturing performance system, Plexus Online consists of over 350 fully-integrated modules that support all aspects of a manufacturing company, from shop floor to top floor. Today there are over 260 customers using Plexus solutions.

About Apax Partners
Apax Partners is one of the worlds leading private equity investment groups. It operates across the United States, Europe, Israel and Asia, and has more than 30 years of investing experience. Funds under the advice of Apax Partners total $20 billion around the world. These Funds provide long-term equity financing to build and strengthen world-class companies. Apax Partners Funds invest in companies across its global sectors of Tech & Telecom, Retail & Consumer, Media, Healthcare, and Financial & Business Services.
Apax Partners, L.P. software investments include: PlanView, Perfect Commerce, RealPage and Intralinks.

About Plexus Systems
For over a decade, Auburn Hills, Michigan-based Plexus Systems has maintained a singular vision -- to drive significant cost, quality and productivity improvements in the manufacturing sector. Plexus Online™ is the first true on-demand manufacturing performance system. It delivers a powerful, real-time interface to the total manufacturing process. With the ability to manage a single facility or an entire enterprise, Plexus Online™ allows manufacturers to closely track critical aspects of their operation, anywhere, anytime. Plexus Online™ consists of over 350 functional modules allowing companies instant access to vital information using a simple web browser. Plexus Online™ includes shop floor control, traceability, quality management, EDI, accounting and many other capabilities configured as a fully integrated system or as a point solution to augment other ERP software.
www.plex.com

About Corum Group Ltd.

Corum Group Ltd. is the premier provider of M&A services to software and information technology companies worldwide. With ten offices globally, Corum has completed over $6 billion in transactions in 15 countries in its 20-year history, and publishes the industrys most widely distributed M&A research. Corum is staffed with highly experienced former CEOs, who are supported by the industrys leading researchers, writers and valuators. The company has spent more than $20 million to build the worlds largest IT database to help ensure unparalleled success in client engagements. http://www.corumgroup.com

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