I had my Canon DSLR body cleaned at the service centre here in Brampton, ON. When I got it back I noticed it felt different--the shutter sound is more thumpy, a

I had my Canon DSLR body cleaned at the service centre here in Brampton, ON. When I got it back I noticed it felt different--the shutter sound is more thumpy, and etc. I checked the serial number to check if it was really mine and it was. It's all fine but then months later just by some coincidence I saw a photo on Flickr with my e-mail address in the metatags. Some of my photo buddies warned me that Canon is notorious for swapping parts when your cameras are in for service.