I will try to keep it without spoilers :smilewink:
When eggheads fix your pda you come back to bar. Then you get task "Talk with Petrenko" or something similar. Problem is, there is a guy stuck in doors and most of the time Petrenko doesn't have task for you when you are talking with him.
Edit.
Here's a fix for it: http://www.mediafire.com/view/oeaelyf2cw9pvzw/dialog_bar_rostok.script
Didn't worked for me, I would have to have some saved games from before I load bar map. Problem is, I'm quicksave guy.