This is a strange one - I wonder if anybody else has seen anything like it or (better still) can see a solution.

If I carry my N900 with me when I go on a long (50-60 mile) cycle ride, and I have Mappero running to track my route, there's something like a 50% chance that at some point in the ride my N900 will reboot itself.

If I carry the device on the bike without Mappero running, no reboots. Run Mappero when (for example) I'm walking around, no reboots.

It seems not to be a general GPS problem, as I've tried running Marble and haven't had any reboots with that running (shame it hasn't got Mappero's functionality).

So I'm totally stumped. Any ideas?