I am getting spam pop-ups intercepting AK, every so often. The AK forum page is replaced by adverts for a genuine company. If I hit 'back' on these, it goes to a (almost certainly spurious) virus alert page. I never click on pop-ups warning of virus infection, because they are almost always virus injection vectors... I have to close the tab, and use a shortcut to get back to the AK page. This does not happen with any other sites I visit. Anyone else seeing this problem?