I've got a Samsung 19" TFT which I've only had for a few weeks.
It appears to have a cluster of dead pixels in the bottom corner. Check it out:
The pictures arent very clear, sorry. But it's definitely not dirt on the screen
It's hard to say exactly but it looks like 3-6 dead pixels next to each other which are always black, regardless of which colour the TFT is displaying.
I know the ISO standard mentions cluster faults - how many can a 19" TFT have before it can be RMAed?