I read a few comments about the AT&T 8310 and the newest GMM 2.10 and the "My Location" feature not working with internal GPS after install (NON-BES USER).

I had the same problem when I first installed, or should I say, "updated" to the 2.10 verison. My location would not work with GPS, it would triangulate (dot with the blue shaded circle) and would say within 3000 meters, which was strange cause it normally would be a lot closer within cell range.

Anyway, all I did was go under my blackberry options>advanced options>GPS and selected to refresh GPS and viola! Problem fixed.

It was weird because I had MapQuestNavigator, and that stopped working as soon as I installed GMM 2.10, mapquestnavigator wouldn't pick up any satilites.. Resets and battery pulls did nothing. But as soon as I refresh GPS, everything started working again! Not a problem since.