Hi, I'm having this same problem now and I noticed there was no response. Can I get some help?
I have a Sony VAIO laptop, and am running BitDefender Total Security 2013. Just installed and activated and when I restarted, and reopened my uTorrent, everything was just frozen up (aka nothing checking, nothing uploading, nothing downloading). I checked rules and uTorrent is added and is allowed. I'm not sure what's the problem... Been trying everything.
Oh For the record: Windows 7 Home Premium -- I'm only using Malware Bytes and BitDefender... I was downloading with uTorrent quite fine before BitDefender... It was really after I installed it.