I have this serious problem on my G5 1.8 Pioneer superdrive... When I watch a movie, sometimes, the screen or the DVD window is full of small green dots... I have no idea what they are and why they appear... I took a shot of it so I hope some one out there can help me... PLEASE!! Also Sherlock in Panther does not have any channels... Just does not show up... Why? Please help, I just don't know what to do.. Look !!!!!!