Wrong location?
The "fix" I used was this:
1. Download/install app called GPS Status, Android Market free app.
2. Open that app.
3. Tap menu > Tools > Manage A-GPS state > Reset > Menu (again) > Tools > Manage A-GPS State > Download.
4. Close app.
5. This should help get location fixing to maps, weather, etc. It helped my TB. It is not always correct, but it is much more accurate than before. Mine showed me in NY, NY, 8+ hrs away to the N/NE, not as far off as East to West coasts, but still was inaccurate. Hope it helps.