Is anybody else experiencing the problem where Mail just randomly starts using a ton of your CPU? It started when I was playing the Mac OS X version of Oni -- I had Mail open in the background, and Oni just all of a sudden started jerking around. When I quit Oni, I noticed that typing was significantly slower, too. So then I looked at the CPU usage of all open processes, and Mail was using 70-90% of my CPU! Quitting Mail solves the problem (obviously), but opening up again immediately makes it start using up 70-90% of my CPU. This issue survives a restart, as well. Note that this is a completely clean install of Panther -- I only manually migrated the settings I absolutely needed from my old Jaguar installation.