Changing the battery creates uniform performance!

After the battery expired during serial shots at low light, I replaced it; then the camera produced the same result after every change I made in terms of both program and value. Has any one had a similar problem with his/her K20D? Could it be a result of sensor warming?

I must say I haven't seen this issue before. My batteries have expired a few times during shooting but maybe I was in one of my normal program thus not noticing....

It will be interesting to see if any of the other guys have seen it...:::

I hadn't either. It happened only once. I'll wait and see if it has occured for any one else.