and why has it had limited success?

From the FAQs

A: We have explored several go to market strategies for PDSG.Over the past two years this has included an aggressive effort to identify partners that already had access and inroads to the market place.Given limited success we followed this effort with the exploration of a merger between PDSG and a specific systems integrator, and then most recently we again modified our market approach by reconfiguring the offering and removing many significant barriers to purchase including providing cloud based services under a SaaS model with generous evaluation options and minimal subscription duration commitments.All this has been done while curtailing cash burn and careful monitoring of the future investment requirements.We believe that this is an appropriate time to explore options in the market place focusing on strategic buyers that can have their market strategies enhanced by the unique and increasingly comprehensive attributes of the CDS-4 product suite and its ability to facilitate secure, standards based information sharing.As we announced on October 11, 2011, we have engaged a third party investment banker and have begun identifying and reaching out to potential acquirers and we hope to achieve a conclusion to this process relatively quickly

From the 10Q Risks

Since the acquisition of our wholly-owned subsidiary PDSG in September 2008, we have provided 100% of PDSG’s operational funding amounting to approximately $8,550,000 through August 31, 2011. After restructuring measures initiated in October 2009 and continued through August 31, 2011, PDSG continues to remain unable to generate sufficient revenues to support its operations and remains entirely dependent on our funding. During October 2011, PTSC retained the services of an investment banker to seek a buyer for PDSG. Should a sale of PDSG occur, it may be on distressed terms with only minimal consideration realized.

What about the lease for PDSG? Cassidy & Turley shows both suites 100 and 120 at 11260 El Camino Real as available in Jan 2012. Was there a sale on distressed terms?