Basically, I get little purple artifacts on youtube, in localised areas (so they conform to the image that should be being displayed, only it's purple pixels. Eg. a video of a cliff would have purple up to the edge of the cliff and not in the sky, if the artifacts were there), where there shouldn't be purple. Computer is running nice and cool (sub 45C even after the odd game, which it runs perfectly with no artifacts or problems :/). Core i5-2500k Gigabyte Z68CP-UDP3P 8GB Crucial Ballistix Ram XFX Radeon HD 6870 1GB (and latest version of Catalyst). OS: Win7 Home Premium 64-bit Morphological AA is off (caused problems with Windows Live Messenger), any more details wanted?