I've noticed, even in great 3G areas, that maps is bad in downloading map data. It is basically painting the screen as I'm driving.
Anyone else having this problem?
I had that problem last night using the Navigation. It also got lost, but I think that might have been because we were driving under train tracks.
I am having same problem, sometimes when moving map with my thumb, to look around, all i have is the white grid, and it takes forever to catch up.