I'm a .NET developer and a long time Windows user. Recently I've been working a little bit on OS X Leopard, trying to learn iPhone development.
So far so good - Mac OS X seems like a great operating system.
I'm assuming that temporary files and logs are being written somewhere, and programs leave junk behind. So I was wondering, how do you keep your Mac clean (please, no "Macs don't need fixin'" answers)?.