However, I have yet to find anything to wipe out "interstitial" ads that wander around inside your primary browser window, and cannot be turned off before they run their normal cycle. Even Symantec has an annoying ad with cartoon viruses floating across your screen, until the Symantec logo appears to destroy them. During the "commercial", you can't access the site's links (but you can exit with the "back" button). I wrote Symantec and let them have it for that ad (and I'm sure they are still shaking in their boots).