2820 Mapping update problems ?

[caratz]

Today I got the DVD with the V9 NT update for my 2820. I installed the maps on two PC's so far, the second at home, where I also updated the GPS unit. This took an hour. At the end of the procedure, I got an "installation failed" message for the 2820. However it seems to be working perfectly, and the map reference is V 9 NT.

When I put in my mother in law's address in Budapest, I do get guidance all the way down there, to the house number, so the maps seem to be ok.

Has anyone else experienced this symptoms ?