Cseries :: Nokia C5 When Press '5' On My Phone / Compass Don't Work

I have a strange problem with my C5,When I press "5" on my phone, my compass don't work. Normally, on my old nokia e55, the compass became yellow and after red and after my map follow the north. With this phone, press "5" do nothing. The compass stay white.Another problem I have, is that the GPS positioning will place my position on a road, even when I'm far away from any roads ( even 50 meters away ). As such, my location on the map is rarely accurate when I'm not on a road.Is supposed it is due to the new version of Nokia maps compared to my old e55. Version is v3.04 10wk32 b04.