I think I found a bug in Beta 4: When I right click on something in the start menu and then close the context menu (by hitting ESC or Alt or by a left click somewhere else in the start menu), the start menu flickers and stays open when I click on the orb. Then, if I click on it again, it closes.
Works great and I would definitely donate when it gets out of beta. Just one request: can you please make it look more "Windows 8'ish"? (like Start8's classic start menu: http://www.theappnews.com/wp-content/uploads/2012/09/start8_095.jpg) I was hesitating about upgrading to Windows 8, but with your solution I'm definitely upgrading, so thank you, and keep up the good work.