I still get my Latitude being updated to random locations momentarily, sometimes about 40 miles away. I also seem to no longer see accuracy circles on Latitude again...do Google just not show this any more, or has my Zaploc stopped working again?

...also, is there any chance of having checkins only trigger when a certain WiFi bssid is in range? The accuracy of GPS is a little coarse in a town centre for example. The fact I also live next to a pub also makes checkins awkward..though we can't see each other's WiFi