I'm on day 2 with my newly acquired N810 OS2008.

The 'map' program is pretty basic GPS program, it doesn't calculate routes or tell you where and when to turn....well I haven't figured out all the stuff yet.

When I activate the 'map' program, outside it took like 20 minutes to lock onto 5 SATS, using 3 standard. In my office it has found 6 SATS and not locked onto any. It took about 3 minutes to find the 6 SATS.

the GPS program seems fairly decent for the freebie.

I have had no issues and I am not using any BT GPS 'modems', just the internal.