Has anyone noticed this problem. I have a Nvidia geforce 8600 gts with the latest drivers and PDVD 7.3 3104a patch. There is two specific HD DVD's, smokin aces and the hitcher where I cannot adjust the brightness or contrast in PDVD video settings. To be more specific, PDVD allows me to change the setting, however, it does not make a difference on the picture. For bluray and standard def, there is not a problem. Just on some HDDVD's, most HDDVD's do not have this problem....Im guessing this is a PDVD problem....any ideas suggestions comments?