Gromozon!
Also the name of this malware is ugly 
Today I had to deal with an infection of a rootkit that is also known as “LinkOptimizer“.
I don’t know where it came, anyway I had an unknown process in the Task manager, named “dbtl1.exe“, and sometimes my cellular phone was starting to try to call an super-expansive number, because bluetooth is active on my PC and it can use it like a modem… luckily, that number is barred by my cellular operator :D
Finally, I found an excellent removal tool. It is produced by Prevx.com, a software house that promotes a (commercial) anti-spyware application.
The Removal Tool is absolutely free.