Comment 4 for bug 1391622

I have it sometimes when starting VLC by double-clicking on a video. I have to wait for about 20 seconds before VLC starts playing (though VLC process is actually started).

It looks like a lock exists somewhere but I wonder where. I am also having a hard time finding information about how to safely debug Compiz (without damaging my current Ubuntu installation). I already tried resetting all Compiz settings but it did not fix the issue.

I will try debugging VLC and break the process when the freeze occurs, hopefully the callstack will give me a clue.