How many of you have received the dreaded "Err(or) 99" message, which is a general error, often indicating battery, lense or camera contacts need cleaning, but it can indicate other problems? If so, was your problem related to the shutter? If so what was your fix? If you sent it in to Canon, what was their analysis, and are you satisfied with the camera since it was repaired? Have you experienced more Err 99 messages? 
