The last round of safari, itunes and OS updates have killed my speed, beachball city. At first I thought after you install something big the system usually catches up and goes back to normal after a couple of days but it's been like 2 weeks now and mine's still around 50% slower.. I have a 2GHz intel core 2 duo 2GB ram 160HG macbook from 06 I think. It's running on 10.6.4 now but was much faster on 10.6.3. My safari has been all over the shop. Tried resetting it and I also use cleanmymac pretty regularly but no dice, still slow. Also my startup chime has been sporadic with volume and sometimes doesn't even happen. Tried resetting my pram but no difference. Pretty annoyed, any other things to try to get it back to normal? Haven't installed or downloaded anything big, maybe a couple of hundred mb of music but nothing that should slow it down. I've still got around 90gb free on my hd as well so I don't think that's it... Also replaced one of my ram cards about 3 or 4 months ago so that should still be ok.. Ideas?