600kms of Irish road? Wow, hope you have a 4x4!

The roads are still jumping all over the place but the edit seems fine. Looks like a rendering bug? Very strange behaviour.

Oh yes, nice find. Good to cache Google Earth in there as well :-) Time for a bigger SD card I think!

I agree. 0.8 metres is a little too accurate! Actually, I'll upload the Garmin tonight to see who wins but I expect there will be little in it. A 6m accuracy isn't bad. You can normally see if you've crossed the road or fallen in a ditch!