I finally got the GPS working, so I went running around the neighborhood tonight. I’d spent the day home from work sick in bed, and just needed to get out and get some fresh air.
Here’s the result. It seems that MacStumbler’s features are nice, except for when you want actual correct GPS coordinates listed in your logfiles along with the access points you find. It displays the correct data on the screen, but not in the log files it writes out to disk. Tomorrow I’ll give iStumbler a proper try now that I’ve got the GPS issues resolved.