Why isn't the multisession login in Lion's VNC server working properly?
Wow - I was unprepared for the change where I don't just see whatever was on the screen and instead are presented with a second loginwindow instance.

My brain reels at the implications for Mac OS X Lion client acting like windows terminal server with multiple independent log in sessions. I bet a lot of software will break assuming it's the only copy running on the mac.

As to your question - I can't get VNC to break - either using Screen Sharing on another mac or using Screens app on iOS. It works like a champ for me, and I didn't change anything from a previously working Snow Leopard system. The upgrade left all my settings and VNC passwords alone and operational.