yes, i have a slipstreamed winxp with sp2, here is my "hivesys.inf" : h**p://depositfiles.com/files/fq4h994ty
Last line of the file shows:
; Customized by nLite - www.nliteos.com
Looks like we found the reason!
Sometimes here has been said that Winbuilder projects need original CD's, nlited ones cause troubles.
Please try an original CD.