Got this today while shooting out in 85 degree weather. I wonder if I'm the only one to get this on the new camera...
I popped the battery out and put it back in and all was well.
At the time I was shooting with my 100mm IS macro, which I have to admit, while it's sharp, is constructed like a piece of crap. It's been in for service once already due to the plastic IS mounts inside rattling around. I thought it was broken, but I guess that's just how an $1100 lens is supposed to sound. :p
Not sure if it's due to the lens, memory card, camera, etc.
Any help is appreciated. Thanks.