Week 50 27-inch and zero problems, other than a screwey gaming mouse.
No yellow, no bars, no dead pixels (a small sliver of black fuzz stuck on the inside of the glass had me worried, but a suction cup + canned air minute later and I was good).
Windows 7 screams, as do all my games. Not a single crash, and I've raided ICC in WoW (full resolution, maxed settings, 60+ fps), quested in LotRO, hacked and slashed til my hand hurt in Torchlight and spent about 20 hours surfing, making movies and watching DVDs. (Christmas break for academics is a joy.)
Crossing my fingers nothing crops up. This is a beautiful machine.