I was finding in The Solar or whatever it was called, I'd turn in the main story quest and that chick would have another quest ready, buuuuut.... with all the people around, the icon over her head wouldn't render at certain camera angles. So I would leave and look at the map and have to go right back in to get the story back up and running.
"We're getting close, real close. And now for some more bad news... Ready?"
-- Egg Shen