Very strange thing after 10.7.3 update?

Very strange thing after 10.7.3 update?

Everything seems to be working normal except the desk top BBC iPlayer which plays fine in a small window but when you go to full screen still plays the sound but the screen just goes black, no video?

I thought maybe the update knocked off one of the plugins or players but reinstalled iPlayer and same problem, anyone got a workaround or suggestion as to how I can fix it, am I the only one?

Full screen YouTube works fine.

Everything else seems ok, maybe running a little hotter and the fans are kicking in a little sooner but does feel a little snappier.

Thanks

Phil