Has anyone experienced any problems with their Garmin Edge 500 since updating the software to version 3.0??? Mine looks like its working fine when i turn it on but when i start moving the speed reading never gets above 6 mph and more often doesn't even register that im moving. All the other data field readings such as HR and Time are working fine just the speed reading is faulty. The problem has only started since i upgraded the software to 3.0 and i cant reinstall the older version. I'm gutted really because it didn't work last Sunday when i did the Liverpool to Chester ride as i reckon i did 130 miles on the day which was my longest ever single days ride and cant prove it.