Never mind. Just went out for a walk with my son and had a chance to take some measurements.

- Fix #1 - 2 minutes 57 seconds. This was with unobstructed clear sky. GPS had been off for about 3 hours prior to this fix.

- Next 3 fixes were 5-25 minutes apart. They were all in the 15-25 second range. A definite improvement.

My impression is that the gpsd patch helps with "warm" fixes -- i.e. fixes within a couple of hours of a previous fix. Cold fixes still appear to be in the 2+ minute range. My theory on this is that N810 does not keep an almanac, and a cold fix basically involves a full sky scan.

Also, if I remember correctly, hot fixes do not rely on system time, and are unaffected by the patch.