I have mist INSIDE my iMac screen! We went on holiday for two weeks, come home, turn on the beautiful iMac to find mist building up on the screen after just a few minutes of use! We have got an appointment to get the iMac checked and replaced next week. Until then, is it alright to use the iMac? Everyone in the house uses it for one reason or another, and although we have full Time Machine backups so we will have our data back on the replacement, we still wonna use it, and cant really be without it for a week.