After differing periods of time playing the game (usually no more than a few minutes) it always freezes. On one of my computers I keep getting a message saying "The ialmrnt5 display driver has stopped working properly" etc, and on the other the game freezes, the screen goes black and then turns into the blue screen with white text.
The driver complication is extremely confusing seeing as both my java and drivers are up to date. I have uninstalled and reinstalled the client multiple times.