I think a lot of us will agree to the fact that Nokia is no Apple. iPhone's ability to switch to the available networks seamlessly is something Nokia users can envy. If you are using an S60 handset and have multiple connections available you might have faced the problem of being prompted to select a network whenever you are trying to access certain service that requires connectivity, through some applications.
Here is a work-around. Psiloc connect has developed an application that handles this 'bug' intelligently. First you got download this application and install in your cell (it's a 10 days trial version, though.) and configure the application. Next time you connect, you won't see that irritating prompt anymore.