Excuse the quality I just noticed this week that the camera is having some issues and has now been shipped out for replacement...yay now getting a 50D (thank you Best Buy service plan)
All I'm seeing are some dust bunnies from a dirty sensor.
The 50D has an ultrasonic CCD cleaner.
http://www.photosol.com/
The dusty CCD is not my main issue though. Flash will not fire (not that I use that anyway), but it will not set off the hot shoe also for pods, and autofocus has gone bye bye, so I have to do it all by hand right now :-[ Sounds like a great excuse for a new one care of the service plan because its 4yo.