I too am experiencing issues with QE and my D620 / Core 2 Duo 2Ghz / Dell A10 Bios / Chameleon 2 RC5 from the newest Extra.ZIP / 3gb DDR RAM / SL 10ud.;6.7).Although I'm certain it's GMA 950 based onboard video, system profiler says it's an nVidia graphics card. Sorta odd... Animation is occasionally choppy, VLC is black screen video with audio, and MKV files are unwatchable full screen. My previous installation was Leppy's w SL 10.6.2, and none of the aforementioned issues existed. Perhaps I should use the old video kexts, or would there be version mismatches?