****... I did contact UpdatePack authors, but I forgot to contact you, the HFSLIP developers (you're a team, right?). I'm sorry. In the next version of the DriverPacks BASE (one with a GUI), there's better detection of UpdatePacks. If an UpdatePack is detected, then no hotfixes will be slipstreamed. Could you provide me with some kind of tagfile or tagvalue to identify a source of Windows XP that has been updated with HFSLIP? I'd have contacted you through private mail, but since I stumbled upon this topic... Please send me a mail (BashratTheSneaky AT gmail DOT com) or let me know right here.