Nokia :: 5800 Ovi Maps Not Working Properly

the ovi maps installed on my 5800 doesn't work properpy or rather i should say it doesn't work at all.from the moment i start the maps app it starts showing me the message "searching for position" and same message is displayed for an hour or more till i get frustrated n close this app.i have tried using it indoor, outdoors, on streets, my house roof, my friend's house roof(which are quite far away). And i hv also used it with gprs connection and wifi connection(i literally took my router on the roof to make wifi available there).i am pretty sure that there is a s/w problem because when i run google maps, it uses gps function wid out any problems.