MY Panasonic big screen picture seems like it is widening on its own. I can't read the sports ticker or the scores running across the bottom of the screen. It seems to be getting worse.

It sounds like something is definitely going in your TV. If you paid a lot for it, you may want to have it repaired depending on it's age. The big screens are expensive to repair and sometimes the repair costs almost as much as a new unit. Get an estimate and then decide because this problem won't go away on it's own. My RCA TV just had the tuner go kablooey. I can't get channels 2, 3, 4, 5 and 6 anymore but I don't care as I only watch channel 68 The Weather Channel in my bedroom so I'm safe until the tuner blows out totally.

Check your aspect setting on your TV as well. I have a Panasonic as well and there is this little aspect button on the remote. I find if it is on the Zoom setting for instance I in counter the same problems you are facing (and I hit is by accident ALL the time).