Well I have now been the proud (?) possessor of a 21.5" imac for 6 months. What a big disappointment it is as well. I have had problem after problem, ie screen freezing up & the only way out of it was to press the power button, windows on the desktop not completely clearing, clicking on sleep & all that happened was the coloured beachball spinning away & when trying to wake it from sleep by pressing the space bar nothing happened, I had to pull the power plug out of the back and then when I refitted it it started okay. I am sure I never had these problems with a "cheaper" windows PC which I used for many many years. Paying that amount for an imac I just cannot believe what a problem the imac is.