After the last patch I had two "freeze screen" crashes followed by "send report" to Anet, to make things crazier file says 8Gb of memory was "used" which is a lot for any game let alone for GW2! My 5 cents go to something "went wrong" in last patch or update for it....since I haven`t really seen instability and crash in GW2 for a very long time. BTW it only happens in GW2 so I excluded hardware problems. Hope they fixed it soon, first time crash was in "Hidden Arcana" and prologue for that mission is so long and u can`t skip it...