Continual screen freezes

[Ssirol]

I have the same issue here.

How to reproduce it :
Have EQ run in windowed mode ;
Open some busy website (flash ?) in latest version of Firefox ;

and bam, EQ froze. To unfreeze it, I have to close my Firefox window and switch EQ to full screen (alt + enter).

This is a new issue that occurs since last week (Firefox last update I guess).

It's the same issue as when Windows prompt you for admin action approval.