Ok after a little research it seems your uTorrent is the culprit. I'd use another software. As for the fix of dns. You'll need to go back to your dns settings and reset them as it was most likely affected by the removal of the utorrent. I would use CCleaner and remove any remnants of utorrent and find an alternative software. It seems the way utorrent operates really taxes the DNS servers you're going through.
If the alternative software gives you dns issues try manually setting the dns addresses in both your pc and the router and the modem if you can access the modem.
Opendns should work fine. 208.67.222.222 and 208.67.220.220