There can be 2 problems from X-ray machines. First, some of them run the conveyor belt backward when there is a power failure or when they are switched off, that nothing is in the X-ray "chamber", and this can dump out your computer if it is at the end of the belt. Some machines have little baskets to catch stuff that falls, some don't. A flight attendant friend had his notebook ravaged this way, as it hit the floor and destroyed the screen. Second, and very rare, if the X-ray machine has improperly installed or damaged shielding the magnetic fields from the internal components might cause some problems with magnetic media. But this is very rare. -Joel > XRAYS are ok but the XRAY > machines and their varied trained personal are the TiPB's enemy