Preparing Websites with Active Content for Announced Browser Changes

Does everyone know about this? Is what Macromedia supplied the best way to fix this issue?

http://www.adobe.com/devnet/activecontent/articles/devletter.html

I nearly fell of my chair when I was showing a client some flash work and each time I rolled over a .swf if would become selected and not work, I couldnt work out what the heck was going on, made me look like bit of goose.

Looking for others thoughts ont he subject.