I have the same problem since first's releases of version 2.0. I still use version 1.8.5 because that. I've seen some users complaining about this, but nobody show interest.
@agmt "P.S. this is very bad, that "Kill process" not killing uTorrent. And uTorrent still visible in process list after logoff - logon. Windows 7 x64" i heve the same problem since first versions of utorrent 2