os x lion had released thunderbolt display firmware. after updating that my mbp screen went kaput displaying snowy background with a big black strip in the middle. luckily it was under warranty,as i had purchased just 5mnths back. gave to the service centre,they were searching for a single scratch to pinpoint the blame on the consumer,but they couldn't find any on the display as well as the aluminium body. they have given a timeframe of 1 week for the repair,let's see what happens next.