The quest Missing Sentries is bugged and cannot be completed. There's no way to avoid the fight, and even if I kill Leyra without touching the soldiers at all, they remain hostile (killed her with the console just after the fight started to be sure). If I kill them all, the quest log doesn't get updated and I can't progress.
I tried to force the quest to advance through the console - it worked at first, saying I should report back to Wyna or whatever her name is. Sadly, she wouldn't react to the fact that it was done, and all I could tell her was that I was still looking in to the matter.
Hoping this can be fixed with the next patch, I'm holding off on playing more until it is.
Edit: Here's another thread about it - http://forums.obsidian.net/topic/73070-leyra-missing-sentries/ - I created this one since I couldn't find one in the tech support forum.