HTC Desire :: HTC Weather Widget Not Working

I've done a search through the threads to see if I can find the same issue, so please forgive me if I'm duplicating anything here. I have an HTC Desire on Orange. Until earlier today, my weather widget was working fine, it knew where I was and it updated the weather accurately. This afternoon it recognizes my location correctly but now says 'no weather data available'. It still shows weather for the other locations - London, Paris, etc, but not for where I am now. The only thing I can think of that has changed is that I just installed an update on an app I have (White Noise Lite from TMSOFT). Might uninstalling this app help? I tried to manually add in my location, wondering if this would work, but it is not available on the list of locations. I've tried removing and then re-adding the weather widget to my home screens. I've tried turning my phone off and on again, in the spirit of all IT helpdesk encounters I've ever had.