I was having problems with OS 9.1 after I installed it. I was having random lockups, especially when I was doing something processor intensive, like playing Quicktime movies, or MP3's. I narrowed it down to the very old control panel Macgamepad 1.06 (2/15/96 & there isn't a newer version). It still works for games and stuff, but would randomly lock up the computer. I disabled it and I haven't had problems since (or at least yet). It worked fine with OS 9.04. Anyone else having this problem? I'm using a Gravis Macgamepad, PM6500/Sonnet G3 300/9.1/128 megs