Utorrent 2.2.1 Portable -

Because the portable version leaves no registry traces, it is impossible for anti-piracy "Copyright Trolls" to find a digital footprint via Windows logs. Furthermore, you can run it via Wine on Linux, on a locked-down work PC (via USB), or on a Windows Server Core installation.

This is the most important section. Using µTorrent 2.2.1 today carries inherent risks: utorrent 2.2.1 portable

No software is perfect, even a legend. Here are the objective downsides: Because the portable version leaves no registry traces,