We are also seeing the same issue - swhx on OS X doesn't work with Flashplayer 10.1 plugin. We have a product in the field that depends on this, and we could easily contract with someone to get a quick resolution (contributed to the public source, of course).
If anyone is in a position to research and resolve the compatibility of swhx with Flash 10.1 plugin - please let me know. Thanks for your help, Eric
-- Neko : One VM to run them all (http://nekovm.org)
