My PC has been freezing up for 3-5 seconds every two hours or so. It has done this ever since the build and I finally found time to address. I tried various scans and tests on hardware and no I am looking at the videocard (8800gt xfxforce extreme). I am using 169.28 drivers from I beileve this site. I am going to try the new driver 171.20 but first I have a question. I loaded rivatuner and started the monitor. The monitor shows my shader clock at 1620.00 and has a yellow exclamation mark on it. Should i lower the speed on the shader or is it ok? thnks and cheers.