[Jadey]

On your Bold, try this:

Go to the Manage Connections section on the main screen
Turn off the WiFi so that only the mobile network is connected
Then go to the Services Status

What do you have under:
Mobile Voice?
BlackBerry Internet Service?
Mobile Network?

If it says something like
Mobile Voice? Connection: Mobile Network
BlackBerry Internet Service? Connection: not connected
Mobile Network? 3G (with the 4 dots next to it)
Then call Vodafone and see whether they have been messing about with the BlackBerry Data Plan on your account.

Also, under manage connections/mobile network options are you Data Services set to ON?

And, when you connect to 3G, do you have the 4 dots to the right of the 3G, or does it just say "3G"?

Let me know what it says!