Funny the firestorm that always erupts when people hear something they don't want to hear. I'm guilty too, nobody wants to think they dropped $400 on something that people are having issues with. BTW, I don't think "Try turning off Glonass..." is much of a solution. "Having trouble with 5th gear on your car? Try not using that gear..."
Anyway, I did soft and hard resets on the first unit to no avail. Then when I received my second unit, I ended up having the exact same issue. Wide open view of sky in area that has never given me trouble with any of the many gps receivers I have owned in the past. After almost an hour, it did lock on. Garmin told me the usual fixes, resets, make sure you have clear view, allow 20 minutes for lock, etc.
Really like the unit, functionality, basecamp is great... Will wait for next iteration, or some more firmware updates before trying again.