Yea, that's exactly the message I was getting before. After I added the acpi=off option to the kernel line in /boot/grub/menu.lst the message went away. Now I'm not annoyed anymore

Even though with that "bug" before; it didn't seem to cause any problems, but I still didn't like getting that message. When I showed my friends Ultimate and how it's so much better than Windows, that small bug message was getting into my nerves because people would see it and ask me what is that all about? (and maybe in their minds conclude that Linux is not so good after all) which is a dumb thing to say. I try to explain to them that machines people usually buy come with the label "Designed for Windows XP" which basically means it will work with Windows XP out of the box with no tweaking and no bugs regarding hardware.