iMac is covered under Apple Care just want some advice before I book a genius bar appointment (local store is in a shopping centre so don't want to drag the massive box in to the store for them to say they can't do anything)! Couple weeks ago I noticed a few times during startup/shutdown some graphical anomalies where a section of the screen would display a pink anomaly - doesn't happen all the time so I'm just wondering what would cause this? Then tonight I've just noticed what I assume to be dead/stuck pixels (doesn't look like dirt). Seem to be concentrated on the righthand of the screen, counted 30+ which to me seems to be a lot? Doesn't seem to be an official listed policy for whats acceptable when it comes to the AppleCare policy for this so looking for advice/experience of others with the same issue and what the repair process is likely to be.