Had an interesting occurrence last night. Right after the announcement went that there was a newer version of carbonite available, all of my quests seemed to have been abandoned, and then re-accepted. I received a notice saying that I kept accepting quests I already had, and this happened for roughly 10 minutes.
Since I completed the update, I haven't had any problems.. but, just figured I'd put this up there, just in case anyone was still having similar problems, so it could be checked in to.
Level: 51 (At time of incident)
Area Quests: Searing Gorge / Burning Steppes
Hope this helped.
"Always imitated, never duplicated.."