Edge 540 offered to install an update when I started this moring. I dismissed for "Later". Rode 85 km, pressed stop, save ride, and the update installed itself. Now my 85km is supposed to have happened in 12 minutes instead of 3 hours, and all the HRM and Power Meter data is lost. And to top it all off, the date on the ride is 31 Dec 1989!! Great.