I have noticed several times after running combofix it leave a "boot" folder on the root of the boot drive. I can't find out much about it other then maybe it being there as a result of combofix cleaning a boot sector virus. I know you can't remove it or the computer won't boot :)
The "Boot" folder is not a standard XP folder. It is sitting on the root not hidden. My fear is someone is going to delete it and all hell will break lose. Did Combofix put that folder there? Why? How can you safely remove it?