This is interesting...perhaps significant:

This Google result reports a recent post to the uTorrent Forums, and this screenshot tells that the post has apparently been taken down.

(PUP.Optional.OpenCandy is a PC thing, but who knows what else is out there?)

Edit: For OS X, see Rookie error: how do I reverse µTorrent installing ad/malware?. (Recent) Again, the linked uTorrent Forum post has apparently been taken down.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire