RNS-D losts its way

I think my sat nav has decided to sulk!

Because I looked at upgrading to RSN-e and I have been using TomTom for some time now, because quite frankly it way better.

So after lending my TomTom to the wife I fired up the SatNav and it told me I was about 50 miles from my location.

I have left it on for ages in GPS view screen and it shows 31 available by 0 tracking. I have entered the location manually and once it found 3 satellites but generally has given up.

Anyone had a similar problem?

As far as I know I have the latest s/w flash on it and the maps are 2007.