i have a gtx 560 (asus dcii oc) which is overclocked to 1000mhz and 1087mv. whie playing games or on the web, or running kombuster, the drivers crash. it always crash on kombuster and on a normal uses, it crashes once each week (not running kombuster). is this normal? if not wat can i do? btw i am using version 285.62....should i use the beta (29-something)? thanks in advanced