UPDATE: Software update Ver. 4.00 fixed this problem. Routing problem with Garmin gpsmap 60csx, which lead to unit switch off. Device was bought 4 days ago, came already with 3.9 version software. This problem was reported by other users in various forums, so I deciding should I wait for next firmware or revert to 3.7 version. Also there was reported that D letter is missing when acquiring signals from WAAS/EGNOS. Strangely but I am able to see D letter on satellite bars when receiving from 33 and 37 EGNOS satellites.