| | Re: Blackberry 9000 trackball problem
Before you take it out, try this:
Tirn the device off. Press and roll the trackball in all directions for at least a minute or more. If you have some "canned" air, blow that all around the ball, while pressing it in.
Turn on the device and see if that helps. If not, you will need to at least take the ball out and/or replace it. There is no 100% guarantee for anything when it comes to electronics.
Did you drop it or get it wet?