Wow, no one else has chimed in with ideas by now. I don't have many suggestions left myself but here goes...
1) Remove all programs from S:user-startup and WBstartup.
2) Try different ram modules, clean contacts and reseat the accellerator. If the Amiga crashes when it's just sitting idle then this is the likely problem.
3) Check HD settings. Accessing files in C: can access the HD and that is when you say your Amiga crashes. If your accellerator runs for hours without accessing the HD but crashes when you are accessing the HD, then this is probably your problem. List your HD setup in that case.
