I can also confirm that this:
Option "FramebufferCompression" "false"
seems to be a valid workaround for the problem. Ran several Virtualbox sessions and watched Flash videos without them freezing (knock on wood!).
I can also confirm that this:
Option "FramebufferCom pression" "false"
seems to be a valid workaround for the problem. Ran several Virtualbox sessions and watched Flash videos without them freezing (knock on wood!).