Unreliable!!! Might as well be a virus itself!!!!

It slows down your computer if you enable everything. When I upgraded an existing installation, it reset everything and enabled every feature. Putting them back was excruciating. The user interface does NOT facilitate customization. It's very difficult and/or buggy to schedule custom nightly scans. You never know if it'll work or not, but you can see in the activity log whether or not they have been executed--mostly "not" in my case. This is completely UNRELIABLE.