Stale Application Run units not terminating

We recently started experiencing an issue where Lawson is not releasing stale application run units. This occaisionally results in situations where we exceed our licensing limit which is very fustrating for our users. Tmmon shows the stale programs in the client process list (IE 10 HR11 instances when we only have 2 people in it). We either have to manually kill off the processes or reboot the server to clear them out. We are running LSF 9.009 and Apps 8.03 on Windows 2003 R2 and no software changes have been made to the system aside from routine Windows updates. Lawson's recommendation was to put on all available env patches, but since we are in the midst of our 9.01 upgrade all Lawson updates are locked down unless required for the migration. Has anyone experienced this problem? Thanks.