Subtitles go out of sync
I have loads of series bought from iTunes, when i play a episode the subtitles mainly is fine but sometimes they go out of sync.
When it happend just now the subtitles is almost 9 sec to late.
I can watch a part of episode, come back a hour or two and the subtitles is out of wack.
Are there is a way to get them to sync again?
Mac Pro, Mac OS X (10.7.2)