I am having some problems with the above card, the problem being that it works OK for a couple of weeks and then the graphics become scrambled ie in Windows XP jagged lines appear all across the screen. If I reload the drivers or download and install the latest drivers it works OK for a couple of weeks and then the graphics go again. When the pc was first built it worked fine for several months and then this nonsense with the graphics started. I wondered if it was heat related but it happens as soon as the pc is turned on, the case is an Antec 900 so it shouldn't be getting too hot. Any suggestions?