After applying a recent Internet Explorer security update (912812) from Microsoft, Microsoft Windows Internet Explorer 6 behaves differently when viewing a page that contains QuickTime media published with iWeb or .Mac HomePage.
When viewing a page with QuickTime media after installing the security update, Windows Internet Explorer 6 displays a pop-up window that says: "Click to run an ActiveX control on this webpage."
Solution
Click the OK button to view the QuickTime media.