I'm running 3.6 on my G5 PM. Even on 3.5, I've had the same issues.
For example, running BackMan, most of the time it will hang.. I might get a Division by zero error pop up from MorphOS..or MorphOS itself wont load fully. The icon bar on the bottom never pops up, mouse moves around but right clicking produces no menu. I'll reboot and its fine.
Is there some sort of log file or setting I can set to max debug so I can see whats causing it?