Ryan Taylor point’s to an article on Grant Skinner’s blog about a bug in FP9 where loaded SWFs are not removed from memory when you tell Flash to.

This is a problem that I’m seeing with ramen just as Ryan is seeing with his PGA app. I was watching the memory usage of a current project and it was taking up  >90mb of ram, GC ran and then it went down to 60mb. Still to high, but damn! I was pretty careful when I was coding it null out references and stop listeners/timers - but I think that I need to make another pass as it.