Uniblue SpyEraser found a number of "threats" on my PC that were not
detected by any other program I tried. Is this a cause for concern?

I downloaded and ran the free (scan only) SpyEraser from
http://www.liutilities.com/products/spyeraser/ . It found a lot of
problems, and suggested that the product be purchased in order to
clean them up.

Among the threats it found were Screenspy, Mainpean Dialer, and
AdultLinks QABar. I scanned my system with Norton Anti-Virus 2006,
Spybot 1.3, and Ad-Aware SE Personal, and none of them found any of
these (or anything else worth worrying about). The Symantec web site
lists files and registry keys for these threats, none of which were
present on my PC.

SpyEraser also listed threats called NX Client, Viewpoint Media
Toolbar, TinTel dialer, and VX2. Symantec doesn't list any of these
as threats.

So - what's going on here?

P.S.: It wasn't so easy to uninstall SpyEraser, either. And when I
got the uninstall to run without errors, it left the program files on
the hard drive anyway.