My 412GW takes an age to pick up the GPS, and when it does, it's frequently off by 100-200 yards. It can look really silly on the playback, it looks like my car is travelling on a completely different road to the one I actually travelled on. Is anybody else finding this? One thing I have noticed is that, at the start of journeys, the GPS shows as not locking until the moment it starts recording a new file (5 minutes) on the memory card. It's almost as if it decides it's unable to add the GPS information to a file if it syncs after starting to record it!!