Accuweather on curve 9300 never connects.

Hi all,

I wonder if you can assist with a perplexing issue.

I am having a major issue with Accuweather on a Blackberry Curve 9300. when I install it and open it it simply never connects and I have noticed that my BIS service (blackberry logo next to the 3G notification) seems to disappear at the same time. Once Accuweather is closed down, my BIS service(logo) returns.
I have tried the following:
Upgraded my SIM card.
Uninstalling and reinstalling Accuweather.
Done a factory reset (loader.exe /resettofactory) on the blackberry and reloaded the OS6 firmware (6.0.0.749) for the phone and then reinstalled Accuweather.

Nothing helps, it does the same thing every time.. Please note that this is a brand new phone and all other services, such as email etc. work flawlessly. My husband has an identical phone with the same OS 6 and the same upgraded SIM card and Accuweather works fine on his phone.

Any assistance in this regard would be really appreciated.

Thanking you,
Gail de Wet.