Hello all, Back after Christmas my iMac )(May 2011) 27" 2TB 32GB RAM (CRUCIAL) 2GB ATI 3.4GHZ i7) crashed which was unusual as it was the first time ever. The mac would crash when running anything graphically intensive and after so many crashes it even started crashing on the screen saver.... After several weeks (and I mean weeks) I got the machine back. They first said nothing wrong, then replaced the screen, the logic board, the graphics card and the hard drive (with the wrong size) so had to go back again. Ive had the mac back for just over a month now and the Graphics glitches have returned when running anything graphically intensive whether on windows or on mac. What I would like to know is do I have any rights to return the product and say keep it as I'm now mightily peeved with the whole thing. For some background it took them 20 odd days to get my iMac fixed last time, refusing anything wrong with it down to replacing the hard drive (unnecessarily). The hard drive they replaced it with then failed and when they replaced that they put in one half the size and I had to get it replaced again. All the work was done through Apple store in Basingstoke UK. I don't have any desire to go back there again but its the closest and most convenient store. Especially if I am just going to go through all this again.