A couple of people have expressed interest in also playing around with Raspberry Pi-based GPS loggers, so I have posted some very brief instructions and a ZIP file with the code I use at
http://www.ecwindfest.org/GPS/. If you want to play along, you'll have to figure out all the Pi things on your own - Google is your friend! I'll entertain any suggestions for improvement, but can't make any promises - I hope to windsurf a lot in the next few weeks, and spend the rest of the time talking about windsurfing, drinking beer, and sitting in the hot tub :-).