There seems to be a problem with the statusbar not enabling. Probably something the python hildon-desktop-applet integration needs or maybe even simpler. Does it work on anyone's system?

Also, for the configuration, you can specify a device so it works with USB modems in USB host mode (instead of BT:rfcommX:..., use /dev/ttyACM0 or /dev/ttyUSB0 for the external GPS). It uses a BT gps IN ADDITION to the n810s (if you leave the BT gps in the car, it will still track - I use a 10Hz or 5Hz when I'm on the motorcycle for the detail and precision).

All the NMEA sentences are logged so if you want to see the accuracy or signal strength you can view it, however if you load them in to GoogleEarth and save them, this information will be lost, but the files will be much smaller.

I just got one of those 16Gb microSDs so I'll be testing that today, but the files created aren't that large even with my engine data.