Looks like sarahn (same gps) and coldstream (different gpps) are reporting the same issue. I drove to work today and found that:
- Reboot is required to use the gps. otherwise it's just stuck at Establishing GPS fix
- once it has lost a Gps fix (i.e. going into a tunnel) that's it, need to reboot to get it working
- closing and opening the program doesn't help
- reset bbluetooth (manually or via the menu item... i rtfm, your welcome) doesn't help
- throwing a tantrum doesn't help (actually, i learned this prior to this current problem... but not soon enough)

Still unsure how to capture the nmea stream... though it's definitely acquiring a fix, just MM isn't picking it up.