This problem is driving me nuts! There must be some setting somewhere that I'm overlooking. I've got a Sony 34XBR800. When I watch a 4:3 picture through the component inputs from my high definition receiver, it looks to be the correct aspect ratio and size..that is to say, the 4:3 picture looks correct [with gray bars on the sides]. However, when I watch a 4:3 aspect ratio DVD or watch a 4:3 program recorded on TiVo, there is a difference of about 2 inches in the width of the 4:3 picture [it is narrower on these inputs]. As far as the various options for picture "stretching", the TV locks into the "Full" mode with any signal from my hi-def box, and the "Normal" mode is chosen with 4:3 DVD's and TiVo programming. The somewhat wider 4:3 picture from the high def box looks "more correct" to me. I did adjust overscan in the service menu while the TV was in Full mode. Could this be the cause of the problem? What's going on here???