just checked by starting a new game
the Pasha's quest IS fixed
try clearing the cache and reloading the game
Clearing out the cache didn't work, but uninstalling/reinstalling the patch a couple times did. Wierd. Sorry for the false alarm then.
I do have a question though: is it just me or is Pasha a little bit too tough? When he was at the 'Near Death' stage, he just wouldn't go down regardless of vorpal hits or how much punishment I put on him. I had to set him on someone w/ AC -18 while I swung "Gram, Sword of Grief" on him so many times and level drained him into oblivion. I still killed him will ease, but that's only because its chapter 6, I've done almost all the side quests, and most of my party is over level 30; and I'm kind of worried he's too tough for other people.