Maybe they didn't expect anyone to save/load right at that scene. I know that if you take some loot that one of the killed guards drops, if other guards see it they may arrest you for theft. Irritating if you don't have a relatively recent save. I know that if you leave Aleroth without helping Mardaneus, and find and escort for the healers (or possibly get an invitation to Stormfist) then George disappears altogether with no explaination. Another bug to watch out for, never try to resurrect an Orc that died as part of the scripted fighting (the ones who's corpses stay there throughout the game). They will turn hostile to you, and from that point on any "summoned" type creature will turn hostile (scorpions, skeletal wall, etc). Plus if you target these hostile things with magic, half the time your magic hurts YOU hehehe. It's fun.