Click here to activate:

"Microsoft has now licensed the technologies from Eolas, removing the “click to activate” requirement in Internet Explorer. Because of this, we're removing the “click to activate” behavior from Internet Explorer! "
blogs.msdn.com/ie/archive/2007/11/08/ie-automatic-component-activation-changes-to-ie-activex-update.aspx

Ist für Flash aber mittlerweile doch eh obselet?