Ant,
I do not see how all the other programs would miss all that.
Zone Labs does not make the
Pest Patrol program.
There are plenty of reviews which say it is a good program. I do not know if I would want to spend the money on it with all the other programs you already have to protect your system.
This article might shed some light on your situation:
As adware and spyware have spread, demand for applications that clean up infected hard drives has grown, drawing a large group of competitors eager to profit. More than 50 programs claiming to erase adware and spyware are available online, and many of these are offered as free downloads. Several major Internet service providers, including EarthLink and America Online, have also moved to provide spyware-removal applications to their subscribers.
But as these programs proliferate, some software makers face mounting criticism that their products install the very things they promise to defend against. Some anti-spyware companies have pointed fingers at rivals and have added competing programs to their list of applications that contain adware or spyware. These lists are used to identify and sweep out offending software during anti-spyware scans.
Spyware cures may cause more harm than good
Take Care,
Richard