I plugged my Garmin Drive 66 into my laptop and it found a map update which it downloaded fairly quickly but when it started to transfer Garmin express said ' Applying Changes time remaining 30 mins, then 17 HOURS, then 1 hour 20 mins the 16 hours. This went on for ages and now I have lost all my maps. I have connected to Garmin Express again and it is doing exactly the same. I really need my maps soon. Any ideas please or any chance of a new one, It's under guarantee.