At home on my PC, I habitually use a little free program called CleanUp to get rid of temporary files and various junk that accumulates in day-to-day nerding. I believe there's a similar program called CCleaner, about which I've read good things.
At work I'm using a Mac, and I don't know anything about Mac maintenance.
Are there things I should be doing regularly to keep it running smoothly?
It's a G5 running 10.4, on which I'm using Creative Suite 3, and various other stuff.
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