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Unable to shutdown G5 running 10.5.8

merwetta1 asked
Last Modified: 2016-03-20
I've got a problem with my Mac Dual 1.8 GHz G5 running OS 10.5.8, and I would appreciate any ideas on how to troubleshoot it.

For the last several days, when I arrive at my computer in the morning, it acts sluggish. I have MenuMeters installed, so I can see the activity of both CPUs in my menu. With all programs shut down except the Finder, I see one CPU getting hammered. The Activity Monitor does not show any program using resources except Activity Monitor itself. The "top" command in terminal does not show anything either. I know the computer is in an "altered state", because any programs I launch act extremely sluggish, and then when I try to shut down, all programs quit, but the computer hangs with the "loading" icon going round and round forever (with nothing else on the screen).

I was running Mozy, but I uninstalled it. I do not have any backup or antivirus programs scheduled to run overnight. If I reboot the computer, everything works fine (including shutdown) until I leave it unattended for the night.

Any suggestions how to solve this problem?
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