I bought mine last weekend, installed Home, updated it to 2.2, updated my map and TomTom application to the most current. I've been able to contribute a few of my own corrections, but I can't get any MapShare updates. Last time I checked it said my map was 29 weeks out of date and missing some 18,000+ updates. I'm getting kinda irritated that it won't update.
When I go to the MapShare preferences in Home, there are no countries listed for me to choose to receive updates for. On the other tab I have a majority of the POIs selected. Home tells me I've joined the Mapshare community, as evidenced by my ability to contribute my own changes so I guess all I can do is wait. I've tried to repeatedly check for updates for minutes at a time, thinking maybe the server is just too busy for me to get through. That hasn't worked so far either.