Just like it says... locking my audio tracks causes audio to play out of sync with associated video clips. It seems to affect recently slipped clips, not entire sequence.
Unlocking tracks fixes the issue.
Restarting Premiere seems to fix the issue.. for a while.
Also have seen where exporting causes sync shift not happening with in Premiere timeline due to having tracks locked.
And while I'm on the topic of locking tracks... locked audio tracks should still be able to be solo'd or muted with out locking/unlocking tracks... just this seasoned editors opinion.
bk