I came across an issue this morning ( which has been around for some time already ) concerning using TrueCrypt and ext2ifs together. I would get a blue screen of death in Win XP sp2 when trying to mount a Truecrypt volume and the BSOD would relate to a driver called ifsmount.sys. Some googling turned up a compatibility issue between these 2 apps. One simply needs to upgrade ext2ifs to 1.11a and the problem will disappear.