hi to all. it looks like my 7D seems to be having the same problem it had before i sent it for servicing. but i wonder if it is normal. when having AS turned on, i noticed that during some shots, it make a pretty audible grinding sound when exposing(have to put your ear on the screen to hear). if it happens in all shots, i might thought that it is normal, but it happens irregulary. can anyone be kind enuf to do this short experiment to see if it is normal? just set your 7D to S mode, 1sec, AS on. out your ear on the LCD and start clicking the shutter away. do you hear any soft grinding sound in some shots? thanks!