While it's entirely possible that you simply have too many background programs that like to connect to the internet (netstat -b
would net you the names of the executables using the network connection), since you said that MBAM found a trojan, I would have to recommend that you go to the Am I Infected? What Do I Do?
sub-forum and create a new topic there with your issue (and discontinue this topic here).
You may still be infected, and the remnants of that trojan could be downloading more malware to your computer without your knowledge (could explain the shocking amount of bandwith usage). It is best to pass through the malware filters first (that's what the AII WDID sub-forum is for), then come back if you still have issues once declared clean.
Thanks and have a nice day.
Edited by keyboardNinja, 11 February 2010 - 10:10 AM.