Finder freezes during copy
When trying to copy files (about 146MB worth) onto an external hard drive, Finder froze after copying about 17.5MB. I couldn't do anything else with Finder, and forcing it to restart caused my whole computer to hang. I had to hold down the power button and force a shutdown, then reboot.
Eventually, by copying smaller batches of files, I was able to get my dataset backed up like I wanted, and it even started working with larger batches of files (like my 9.5GB itunes library at once).
As a result of the forced shutdown, my itunes library was corrupted (though all my music was still on the disk and I easily restored it), and MS Office hasn't been behaving when trying to open or save files. Disk Utility says permissions are fine and my drive itself is fine. I thought that almost everything was okay beside Office, though uninstalling and reinstalling did not help.
Then, when I tried to copy files to a network-mounted drive, Finder froze again! I'm not trying to copy excessively large batches of data, or copy much from the desktop, but Finder continues to freeze when I do file copies.
Has anybody else had this problem and/or found a resolution?
iBook G4, Mac OS X (10.4.8), 1.25GB RAM, 60GB HDD, Combo Drive, iPod Mini 4GB (2G)