Okay, I think I've nailed this down. The Authentium web site lists Aluria
software as a partner (which is what I suspected). Also a partner is Webroot
(I tried a demo of their anti-spyware software at one time and removed it
from my system.) It looks like these products depend on this software to run
their real time antivirus protection, although they are anti-spyware apps.

I'm posting this here to let other users know -- because there is very
little info about this on the web. Aluria's product (Spyware Eliminator) did
not uninstall cleanly. Files, registry entries, etc. All over the place. And
it was a disaster to work with, too, conflicting with everything and slowing
Windows to a crawl.