I never saw it occur on Sarlona, myself, nor was ever asked to perform anything like that on Karoneth. Before Mod 8 hit though I thought I should always have Death Pact on in part 4 so I don't go to the dead room. Once a guildy did that and went to part 5 (he finished right out) I learned it wouldn't help and never tried it, then I later heard of the exploit via the forums here, and ensured I never had the spell on in there.