[mecreyes]

A really quick signal acquisition means that the signal was "boosted" through your data connection.

A really slow sat acquisition (if you are outdoors free of overhead clutter) means that your GPS is in standalone mode.
This slow acquisition takes longer if you are in a moving vehicle.
This standalone acquisition is referred to as a "cold start". It takes the best commercially available GPS units 2-5 minutes to acquire...

Best bet, is to stop moving and make sure you are not in a canyon, the amazon or subway tunnel...