I just got a new 20D a week ago. Last night I was playing around with it and was focusing on something that was too close. I had the built in flash up. The flash was giving a series of rapid bursts, and it sounded very strange, an electrical sound, almost like a short. It happens everytime I repeat this. Has anyone else experienced this? Is it normal, or does this sound like an electrical problem? I plan to contact Canon about it on Monday, but would like to hear from others first. I really want to be able to return it to B&H and get another in time for Christmas if I have a problem. Thanks.