Yesterday a colleague of my was using an E-10 to take pictures of student research groups. The camera had new CR-V3 batteries. She was getting no images and asked me about it. I took a picture and it was fine. She tired and nothing happened. Th E-10 does have a very subtle shutter fire (since no mirror moves) so she held the shutter button down. Suddenly, wispy smoke started leaking out from under the under the built in flash. We rebooted the camera but had trouble after that. Just to try, we switched to 4 AA's and it's behaving fine again. We both checked the orientation of the CR-V3's and they were fine. The camera is behaving fine now, but I'd love to knwo what was burning.
Of course, I do use CRV3's in my *istD . . .
