i totaly deinstalled flash player (heard also a lot of problems with it -> viruses) its like 1 or 2 weeks now and i never had any crashes anymore
i also noticed that everytime when i was watching series on burning series (only whatch there if you have an addblock ^^) when flash or whatever tried to load a site in background the client crashed even if addblock blocked it x-x you see a milisec loading something - client crashed - but nothing opened cause addblock blocked it
so in my experience it has to be Flash player (im really 99% sure)
game actually work just fine with silverlight, thats what ive tried after flash. and only got random dcs and no more crashes c: