I had no idea where to put this. Maybe the forum needs a messageboard for phone discussion? Anyway ...
So Ive had this Nokia 6680 for 6 months now and I decided to get a bluetooth adapter for my PC so I can transfer files between them and whatever. Just one day after I enabled bluetooth on the phone for the first time ever, Im sat at work and my phone beeps with an incoming bluetooth connection. Caribe.sis. Oh it must be a theme someone is sending me I thought so I accepted it. Then it says do I want to install it with an 'installation security warning. unable to verify supplier. continue anyway?' I hesitated for a moment and googled caribe.sis and it turned out to be a virus!
http://www.disklabs.com/cabir.asp
Goddamn! 
May the NFOrce be with you always.