I purchased ATVflash last November. Since then I have tried everything posted to get Hulu and other videos working on Boxee, but nothing worked. Yesterday I downloaded the most recent beta version of Boxee to Apple TV and now everything is working! And there is a brand new spiffy user interface that looks great!
I am not sure what changed (I had already downloaded the newest version fo ATVflash and Boxee in early March) but it now works wonderfully! Thank You! Thank You!