Two part question: 1) is there any performance hit incurred by having many useless apps in the Security list? I assume that there might be (even if it is slight) based on the idea that PG mush hash each app being launched and then look up that hash in its database. The larger the database, the longer this would seem to take. which leads me to part 2..... 2) I think a very useful option to add to PG would be another button on the alert when launching a new/changed app that looks something like: http://solvent-llc.com/files/permit1.gif If a separate button is not desirable, then perhaps a checkbox below the permit button that just reads: Code: [x] do not add to security list ...anyway you get the idea. This way, when launching things like installers, temporary apps, testing programs during development, etc... all things that will never be run again, the Security/MD5 list can stay small and lean. I don't see any security risk to this, and it would make my life a lot easier as it has now become one of my obsessive rituals to clean out my list on a daily basis. thanks..