The first Time I had solved the problem by uninstalling the entire Developer stuff, but after 2 weeks it has reappeared.

After I had done this procedure again and had installed the Developer stuff again, Accuweather has ever stopped working. For several days I have hence this developer stuff again uninstalled and Accuweather works perfectly. The problem seems to be so effective in these two applications that are somehow incompatible.

Edit: I've enabled always the background connections