Installed 7b85 and my Palm M515 on Palm Desktop 4.1 hotsync'ed without any problems. All the Palm and 3rd party modules I used had no problems. eg. PocketQuicken, WorldMate, iSilo, Entourage, BrainForest, Adobe Reader, StarAlliance Timetable...
So 7b85 is solid in this regard. Hopefully it's...