said by Anonguy :
Just watched PAC12 classics and did not see what you are describing.
You sure noone messed with the TV aspect ratio? Or Zoom button on Cox remote.
I have TWC and one one my TV's overscans the the PAC12 network and part of the screen is cutoff in HD and on both of my TV's the SD channel has part of the screen cutoff too so it is a problem that the PAC12 has caused by using the entire screen on the bottom for the ticker.