Yes, I had the same problem, though in Sweden. I kept on getting located in the geographical middle of Sweden (which is far from where I am) whenever I turned the GPS on, whichever map-app I used: Nokia Maps, Mappero, Maep, or whatever. It also took a very long time to get proper GPS-lock: 30 minutes to an hour in good out-door conditions!

The solution suggested above solved the problem. Going into "Settings", then "Location" and changing "Location Server" at the bottom from:

supl.nokia.com

into:

supl.google.com

made me get GPS lock much, much faster (within less than a minute, indoors!). Of course, you do need an active internet-connection when starting the GPS for this to work.

supl.nokia.com does respond to ping, and I suspect it is what starts out placing us in the geographical centre of our countries. I don't understand why it does so, though.