I am facing lot of issues post moving on to the new nokia belle. Unable to delete gmail mail box...it just shows deleting but it never ends. would appreciate if any one has a solution for the same...
Welcome to the Nokia forum.
Try a hard reset and then reinstall the update after that. This should fix the issue.
Make sure you make a back up with Nokia Suite first by going to Tools > Back up. Don't tick the Settings box as this will backup the bug that's causing this. Once you've made the backup, enter *#7370# into your phone and default security code 12345, unless you've changed this code yourself.
Once the phone has rebooted, reconnect it to Nokia Suite and reinstall the current software to make sure you really get rid of all possible bugs. You can do this by clicking on the green arrow in Nokia Suite.
After you've done the above, place the backup back onto your phoneb by going to Tools > Restore in Nokia Suite and then it should work.
Let me know how you get on so that I can troubleshoot further, if necessary.