I've a Macbook Pro running 10.6.8 that has a gremlin. It's a buds computer I'm fixing, and almost every keystroke results in 10-20 seconds of spinning pizza before anything happens.
This afflicts every program I've tried. Finder searches are interminable. Double click to open a folder window or even the hard drive, 10-20 seconds later it does.
When I got the machine, I booted from the Snow Leopard install disk to run Disk Utilities, and the directory was so screwed up repair was impossible. Ditto booting from my Disk Warrior disk. So I managed to get Time Machine to backup to an external drive, reformatted and did a fresh install from the Snow Leopard install disk, then restored from the backup. When it rebooted, the problem was back, so reboot from Snow Leopard install disk, ran Disk Utilities, no problems. Then booted from DW, and minor problems were found and fixed. But I did find 7 preference files unrepairable, none to programs I have tried to run.
So I created a new user account, and the problem is there, too.
Any suggestions gratefully accepted.

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