I recently upgraded to a 20 inch Intel iMac running 10.4.9 from a 15 inch G4 iMac that ran 10.3.9. I'm getting a lot of freezes and finding this very frustrating. On my old iMac when a program froze I could generally force quit the program and other open programs were not affected. On my new iMac most of the time I am not able to force quit the program and other programs are also affected, e.g. Safari will freeze up on me and iTunes will quit playing at the same time. I've got 2 gigs of ram on the new machine, so I don't think it's a ram problem. Any input would be appreciated.