Sound advice Steve. Although the Activity Monitor didn't seem to tell me anything (and it shuts down the moment I hit the Shutdown command). Of course I had already done permissions and the whole Disk Warrior v4 on it without any luck. So I did an 'archive and install' of 10.4 and the problem appeared to be cured. I then downloaded the combo update of 10.4- 10.4.8 (instead of reinstalling 10.4.10) and everything appears to be back to normal (although I was prompted by Photoshop to a partial reinstall for a couple of missing files). I don't think I'll run the 10.4.10 on this machine. I've gotten great service from it but I'll have to surrender to the Intel Mac soon as much of the new pro-photo software is geared for it and runs slow even on my relatively new G4 1.67ghz powerbook. Thanks to all who pitched in with suggestions. It really would be an 8-10 hr project to start from scratch. I run my whole studio on this computer. Best, ~Jay On Oct 3, 2007, at 4:00 PM, Steve Adams wrote: > First thing I would do is look at Activity Monitor after shutting > down and see which program is not responding. Try doing a Forced > Quit on that program from the Activity Monitor. Usually this > resolves my problem forever. > > Next I would check and repair permissions. > > After all that, if there are still problems, try reinstalling the > last upgrade. The upgrade should go faster since it sees it has > already been installed and only tries to install missing or corrupt > files. > > No need to reinstall any applications, the upgrades won't effect them. > > Steve Adams > > > > > > > On Oct 3, 2007, at 1:31 PM, JayB wrote: > >> Hey gang- >> >> I needed to install my upgrade to CS3 (photoshop) so I had to jump >> from Tiger 10.4.1 at least 10.4.6. I went ahead and downloaded >> and installed the upgrade to 10.4.10. >> >> Although CS3 runs (slowly), and everything else seems OK, the CPU >> won't do a proper SHUTDOWN. It empties the screen down to desktop >> color only and hangs. No wheel (curser fine), no other clues. >> >> I've since zapped the PRAM, and run Disk Warrior 4. >> >> No Joy. >> >> I've got a 500 AGP boosted to 1gig (and a gig of RAM) that has >> run smooth for 5 yrs. >> >> Until now, things were fine. >> >> Clues? >> >> >> _______________________________________________ >> G4 mailing list >> G4 at listserver.themacintoshguy.com >> http://listserver.themacintoshguy.com/mailman/listinfo/g4 > > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4