[mythtv] Mythfrontend - freeze on FF/REW "prebuffering" libmpeg2 [backtrace / strace included]

[Blammo]

> Try building w/o GL sync (comment it out in settings.pro).  For me, that
> eliminated 99% of the "lockups" related to OSD activity.  Running with RTC
> sync (which you'll probably fall back to if you don't have GL) seems to
> prevents what I can only guess is a deadlock between the GL refresh wait and
> something else.

Hmmm.. and if I built without it already??

I'm going to try building WITH it, and see if it makes it any worse. :p