Re: Weather Widget on Lockscreen?
Nope-- there's not even a weather app you can access from the app drawer. I think the weather widget is part of TouchWiz-- if you tap on the weather widget on the default homescreen, it opens into weather but you'll notice it does not show up when you click on multi-tasking. It is however listed in the RAM manager, so I could be wrong. Either way, if you go into application manager it DOES show there. Have you gone there yet? If not, try force stopping, clearing data, and resetting defaults (if available, sounds like you haven't used a 3rd party app?)
Sorry you're having so much trouble. What country and carrier are you using?