I've noticed over the last week that Diagonal lines are appearing far more jagged than I remember them on my screen. Specifically thin objects on the diagonal plane, such as spectacle frames, Buzz Lightyear's helmet, Sulley's fur and even the text of Movie credits. Sadly, none of the THX optimode screens display diagonal lines, just vertical and horizontal cross hatching, so i can't spin up a useful testcard. I've not messed around in the Service menu and it does seem more pronounced on my NTSC DVD's, but it occurs on digital terestrial as well. Anyone ever encountered this problem before? I'm certain it's worse and not simply my eyes noticing imperfections that have always been there. My TV is still under warranty and if anyone thinks this may be a fault, I can get an engineer to look at it. Any advise greatfully received.