I have a Performa running OS 8.6. About an hour ago I tried to run a program from my old Classic. It crashed. Fair enough. However, since then my Mac has been running much S-L-O-W-E-R. Just typing this is slow. There's a time lag sometimes, but imbetween it's normal speed. It can't run the startup movie I usually have (PSX startup). It gets through it at literally about 1fps. Help! I've scanned the HD and re-built the desktop, but no luck. It's the same with extensions off. Somebody's got to know what's happening! Please? I'm desperate here!