Oooh gotcha now. I know that you can set up AdAware to run that way, and I would assume that any other scanning program would too. SpyBot has a user-determined scanning profile- I'll check that out tonight and see what it says.
to get you to buy more software and because the average person would be so annoyed by the barage of warnings that they would turn it off or accept anything anyways. its kind of like when Zone Alarm was new and didnt check for known programs that are ok to let online. ISPs didnt appreciate the calls from people locking down their machines, or calling about non issues. I hated tards that did stuf like "zone alarm told me that iexplore.exe was connecting so I stopped it. and then Internet explorer didnt work so I just went and deleted the folder and now nothing works at all."