Last week, GW sometimes freezes when i'm playing.
I'm playing GW for two months now and it never happened before.
Does anyone now what can cause this ?

I discovered it's not my computer but just GW. When i press the windows button that normally pops you windows menu, the normal white mouse arrow appears. It's the GW frozen screen that blocks my sight. Maybe any hints to remove such screen and get back to windows or something ?
OMG, it just happened again!!
PLEASE help me