I know and have heard of this bug, but to me, its simply rediculous!
Spoilers!!!
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What I am talking about is the bug where after in brynnlaw where you get the sleep potion and get the cook to help put the guards to sleep and then kill Galvena, when you return to the cook, she keeps giving me expirance. I know some will say she does it for a limited time, but even when I'm not surrounding her she does it, I've saved and quit, then gone back in and she continues, I've even left the room and returned, she's still there willing to thank you and continuing to level up my party. Has this happened so extremely to anyone else?
(Oh, Until I noticed she wasn't going to stop I leveled myself (a paladin) and Viconia twice and the rest of the party once.)

If you dont want the experience go back to a latter save and kill the guards. You dont lose REP and there weak, you just wont get the experience.

Also they have some decnet halberds +1 and +2 if u dont have any of the sort yet!

I killed the guards before I killed Galvena... and you do get exp from killing them when asleep. Nor was I complaining of having too much, or was I? I dunno... Also, if your name is implying from the character of The Three Musketeers, it's D'Artagnan...