How many OSes do you have installed/VMed/Emulate don yer machine?
I have the following on Karasu (My desktop):
INSTALLED: Windows XP Professional
VM'ED: Windows Longhorn Beta, Windows 98SE, Windows 95B, Windows 3.11WFW / MS-DOS 6.22, SkyOS 5.0Beta, Slackware Linux 9.1
EMULATED: Mac OS X 10.3 Panther, Mac OS 8.0, AmigaOS 3.1, PalmOS 4.0 (M505), YellowDog PPC Linux (real bitch to set up)
(edit: Forgot about Longhorn ^_^;; )