There is an Explorer update that could cause some problems with flash. There is some JacaScript workaround right now. Nothing I've messed with yet but something you should take a look at if you use a lot of flash.
http://www.macromedia.com/devnet/activecontent/faq.html
http://adobe.breezecentral.com/activecontent022606/
http://msdn.microsoft.com/library/de...ng_activex.asp