We've heard rumours from two different sources that the Cabir mobile phone virus would be in the wild.
We've been unable to confirm this so far, but in any case we're recomming users of all mobile phones with a Symbian Series 60 operating system to keep their Bluetooth in non-discoverable mode. If you don't understand what this means, just turn off Bluetooth.
This includes phones from manufacturers such as Nokia, Siemes, Panasonic and Sendo.