I keep getting permission denied, even with sudo.
Also, after the last update I'm noticing tearing in the image when playing videos. This only occurs with my ATI Card (by the way, when using it I disable the on-board video memory and make sure the aperture size is down to 4 MB)
When switching to the on-board memory the tearing does not occur. So for now I'll stick with the integrated video memory and wait for Ubuntu 10.10. Hopefully by then this video card mess will be sorted out.