I have a canon digital rebel xt,recently I sent it in to be cleaned,there were some dust specs in the viewfinder,and the bottom mirror was really dirty,I still dont know how that dirt got in there, I have only had the camera about six months.When I got the camera back,the mirror was clean but there was twice as much dirt in the viewfinder,I sent the camera in through best buy, where I bought the camera.I am going to send it back in again, what I am wondering is the dirt I'm seeing in the viewfinder going to hurt anything,or should I just ignore it and leave it alone,after spending about 1000.00 for the camera I would sure like to have it spotless,am I too picky?