Utorrent 3.4.2 will be banned very soon. So if you are using it consider using other build. We recommend using utorrent 2.0.4 or 2.2.1.

Yet another issue with new utorrent releases...

Quote from the first post at that forum link:
"When I updated uTorrent to version 3.4.2 build 28913 (32-bit) this morning it silently installed a piece of software called EpicScale. There was no information about this during installation and I did opt out of your other bundled software.

EpicScale is a bitcoin miner that also purports to use your "unused processing power to change the world". It's easily noticeable by the increased CPU load when the computer is idle.

The file date/time on the EpicScale files matches the time of the uTorrent update, which confirms uTorrent as the source.

Several other users are reporting the same thing..."