Since installing Mavericks (OS 10.9) on my late 2009 MBP and early 2010 MPA (which formerly ran Snow Leopard), AirParrot has become less useful. it's staggering, often out of synch, and with mismatched video. It's simply incapable of mirroring streaming content as it did before. I'd rather have mirroring than Mavericks' few other nice but unnecessary features, so unless Apple or AirParrot comes up with a currently workable solution, I may have to remove Mavericks and reinstall Snow Leopard. Apple would no doubt wish me to buy newer machines, but those I have are serviceable, familiar, and enable my high-productivity workflow. Plus they don't cost $2000 apiece. However, I would prefer a solution to reinstalling Snow Leopard.