I have a 15" 1.25Ghz G4 running Tiger, and I've had it for almost two years, it's run great until about a month ago, when one day it took half an hour to even get to the blue screen. I started getting the beachball all the time, and quicktime movies and iTunes songs have started to shudder a lot. I've run onyX, and it seems to help a bit, and it is loading much faster, but I still can't watch a quicktime movie without it getting hung up every 5 or so minutes, and a lot of times Safari will get the beachball for a couple minutes for no reason, before going back to working normally. Activity monitor shows about 70 wired, 150-200 active, 170-250 inactive, and anywhere from 5-60mb free. Is there any other thing I should try before taking it in?