For BBWeather - it will work fine, but the first time it starts, you must use the following key sequence or else it will hang the BlackBerry (any BB with the trackball/Pearl):

Start BB Weather
It will generate an error message about no profiles
Press the track ball twice (first to clear the message; second to bring up the menu)
Scroll down to Options and enter in the weather location information

It will work fine.

If you hit any other key (like the menu key) BB Weather will hang and you will need to pop the battery.

Enjoy your 8830!