Following on from my post prior to Joyce.
I did take the trip to the AppleCentre.
Met by a tech who was at best, less than enthusiastic, almost disinterested. Seemed very blasé about my concerns for the general LCD quality, poor uneven illumination and the dust and scrud 'inside' the screen. And would you believe... in the short time i had there, only one instance of the display anomalies, to which the tech, again almost bored, said 'oh, yes i saw something but that could have been software'... Despite all the photos i showed him of previous examples. Got the usual, 'why didn't you deal with this under warranty, why didn't you take out AppleCare'... and then, 'well what do you expect, it is 3 years old'... WHAT DO I EXPECT!?! Sheez, like he thought it was normal to pay nearly $3,000 for a product and only expect to get three years out of it.
Anyway, i said i'd leave it with him and he would run it during the day and see what happened. Returned at the end of the day and he reported that nothing had happened. I do wonder how much attention he was paying, there thing do come and go on the screen... it's not like you just play a DVD and stream some video off the net for a couple of hours come back and there you have it, loads of little anomalies all lined up... Anyway, he said 'it might be software related', or something to do with a 'periphery device like my external HD'!?! Yeah right... but i'll do some testing, run if for a day with nothing plugged in and copy all my working files to the HD... we'll see...
But basically, not very happy with the whole process... especially the attitude. I'll see what the the guy at Apple PR has to say about it.
To be continued...