Seawind: I have become a slave to geocache maintenance and this is the biggest culprit. Between dead or frozen batteries, corroded contacts, wasp invasions, ant colonies (it's full of ants at the moment) and just plain unexplained malfunctions, this one is a handful.
It was fun while it lasted! Thanks for all the great logs! Feel free to use the idea (but be ready for a lot of ongoing work!).