The computer I'm currently running, an HP that came with the cheap no disks Vista installation, has been randomly crashing on me the last two weeks. Since it didn't come with Vista disks, and I can't do a selective re-install, I'm currently in the process of forcibly reverting it to being an XP machine.
In the current setup, I can theoretically boot to Vista off the factory drive, or XP off the drive I moved from my old computer to make the revert possible.
I'm curious if anyone has any experience with dual boot machines. If it isn't likely to cause any conflicts, I might save the Vista boot in case I come across a program that won't run on XP properly.