IE double click to activate flash 2

Microsoft released an update for Internet Explorer that changed the way the browser
displays and runs ActiveX components, flash movies and Java applets.
Because of security issues the browser asks you to activate these controls by clicking on them. Meaning that to actually “browse” through the flash site, you need to double click it the first time.
Read more about it here: Flash Player Technote: Internet Explorer displays a box around flash content

A way to prevent this is by including your swf file with an external javascript file. More information on how to do this you find here: Active content update article

And for the lazy ones among us, this should be a free program that solves it for you (didn’t try it myself): Flash Release.

A nice video on it, you can find here: YouTube Video