Okay, so having stopped using Chrome, I haven't had any notable problems until today.
Not sure if its strange that I'm getting rainbow balls of doom whilst copying and pasting photos from preview into powerpoint, but I am. I thought rainbow balls of doom weren't supposed to pop up as much as it does for me.
But also, later, I had opened iMovie, and it said that it had to load preview images, so I said yes. When it was done, the mac froze. It froze in place for at least 2 minutes, then I just force shut it down by holding the power button. At the time, the mac was insanely hot, so I suspect it was overheating. I was using it with an external monitor and the mac was sitting in clamshell mode on the table. The only intensive application open was iMovie. Other things open were Safari, Mail, iCal, iTunes, Word, Messages, and MSN.
So anyway, after the forced shut down, I turned it back on, and it was still frozen. It sat there for about 3 minutes and I couldn't move the mouse at all. So I force shut downed it again and let it cool down for about 10 minutes. Upon turning it back on it, it organised everything really slowly and I exited most applications.
I'm pretty sure these things aren't supposed to happen. My old Dell could run all of the runnning application equivalents and still work fine with video editting software. >=(
So what do you think I should do?