I get annoying "about:blank" popups whenever I go to homepage and usual websites that Nortons confirms are safe. Goggling the problem seems to bring up that about blank is a virus but after an upgrade to Nortons v6 and two complete system scans, it cannot be detected. My popup blocker (turned on) is set to the highest level. I am running XP Pro v3 on a Dell 530 Inspiron desktop. I tried system restore to get to a previous known good date, but it wouldn't restore. Internet Security & Privacy are set to Medium-High. Has anyone had this and gotten rid of it? Is this, in fact, a virus? Thanks for your help!