If not sure if this falls under the category of virtualization, but since Rollback RX is offered at Bits du Jour today I thought it warranted a thread. What are your opinions of it, say as opposed to other apps such as Shadow Defender or Returnil? I understand that those two are not rollback, but do you trust them more than Rollback RX? Also, if I am correct, Comodo Time Machine and Rollback RX are virtually the same application, right? CTM uses the Rollback engine. The only differences I can see are the gui and the fact that Rollback RX offers snapshot encryption.