Guys, I'm new to all of it - so please help me here! I just bought a Sony KP57WV600 and verything seemed to be OK. Then yesterday I brought Samsung HD831 (only model I could find in Best buy with upconversion) and I hooked it up thru DVI cable provided. So the thing is - when I play a movie for 10-15 minutes everything is fine, then out of blue, the picture breaks and becomes distortedand sort of oval in the middle with flickering margins. When I switch back to 480p - nothing changes. The only fix is to turn of the TV and turn it back on, to fix this distortion. Is this my TV? I have spent an hour on the phone with Sony this morning and they are going to call me back. Any help would be greatly appreciated.