Daily, at least. Depends what you're doing, I suppose, but playing with large files in image editing software means a lot of memory gets doled out and virtually

Daily, at least. Depends what you're doing, I suppose, but playing with large files in image editing software means a lot of memory gets doled out and virtually none of it ever makes it back into the pool when a program exits (Windows seems to be overly concerned that you might want to use that memory with that program again "right away", where "right away" means sometime in the next six weeks or so). There's little point in suspending; that just leaves the machine in a laggy state. And by "laggy", I mean Eclipse-on-a-Pentium-3 laggy. Shutting down when the machine's not actively in use means I get a better shot at not having to reboot in the middle of session.