We are aware of a license server crash that can occur on OSR6 and Unixware platforms even when license server logging is disabled. We have traced the crash to corruption of the heap but have not yet been able to identify the cause of that corruption.
We felt that we could not justify holding the release of 05.06.04, with its important non-server licensing fixes, while we tracked this bug.
We are actively working on resolving this crash but until we do our recommendation is for OSR6 and Unixware installations to run without the license server.