A couple months ago I purchased a new color scanner (thanks, Vista) – a Canon LiDE70. I noticed a few weeks ago that I was having problems scanning color images, and it popped up again this weekend. I would get these very odd colored, horizontal lines through the image, most visible on black and dark colors.
Since I actually needed color this time, I had to figure out what was going wrong. I did a half dozen scans, each time playing with a few settings to see if it would resolve itself. I looked for new drivers – none. As a last ditch effort, I changed which USB hub it was plugged into and it worked!
Never would have guessed that would have been a problem. I hate USB hubs.