hey, i have another problem with mudbox
it works fine then sumtimes wen i open it the viewport takes ages to load the grey background, and then mudbox runs SUPER SLOW, cant even open a file. to fix it i have to unninstall my graphics card driver n reinstall it 
has anyone had a similar problem?
cant afford to waste all this time
got too much work to doo! but it keeps messing me about!
thanks!