Figured I'd join just to talk about this:

My last experience with gnash (on a desktop OS) wasn't very good. It wouldn't run most Flash 9 flashes at all (VVVVVV for example). My quick experience with porting it to the Maemo dev environment wasn't any better.

In fact, when you run a Flash 9 SWF with gnash in verbose mode, it warns you that Flash 9 isn't fully supported. If it barely supports Flash 9, what makes you think you'll have any better luck with Flash 10.1?

I think a more ambitious project would be to port Lightspark to maemo. Apparently it has an ARM port by the Ubuntu folks (https://launchpad.net/ubuntu/natty/+...0.4.6-0ubuntu1). It supports AS 3, and will fallback on gnash for AS 1 and 2 code.