Looks like after installing Beta 6 I've lost my bridged ethernet capability in my Windows Xp guest OS.
I'm using (or WAS) en1: Airport Adapter on my MBP and she's DEAD On ARRIVAL. nada, gone...
Well, it looks like a lot of us are seeing networking problems, yes. I was using host-only networking with the NAT hack and now it's kaplooie. Sounds like a typical (though always unfortunate) beta regression.