Flex is a great ide for developing database intensive applications - except for one minor problem. How do you protect the swf and ensure the sanctity of a serious business classs application?

THere are several swf obfuscators available but i've not found any that get high kudos.  We are exploring nitro-lm as a possible solution but would prefer learning about methods that are freely available.

I'd be very interested in hearing from folks in the group that have found / or are working on this issue.