iMac 1.8 with Snow Leopard up to date. Was runnign fine and then I began to notice some minor slow downs with Safari and the finder. Rebooted, repaired permissions and rebooted again. Now machine is nearly unusable. Safari takes 3 to 5 minutes for each task. Spinning beach ball all around. Just typing this post each letter appears after 40 seconds or so. Loading a web page takes minutes. Tried to launch Word and it took 32 minutes. I have rebooted a few more times. I have applied no updates recently or done any installs. I am in the middle of a huge school project that I need to get done, so I am dreading a total rebuild of my iMac. Is there a common system preference I can trash to reset things? Any thoughts as to what would cause a system wide slowdown? I have 150 gigs free drive space. 4 gigs of ram and only safari open as I type this. Something is seriously wrong and I am at a loss. Activity monitor shows only 5% CPU usage. It shows Flash for Safari using 32%. I suspect it is related to that POS plug in.