If you're tired of waiting for Skype to provide its video conf feature, you can have a look at our skype-video-conference project.
With our experience on Skype video and asterisk IPPBX, we managed to implement a box supports 4 way video conference based on Asterisk and Skype 2.0 for Linux.
Here's a video of the prototype. We are now working on 8 way skype video conference.
We may open source this project when we decide using which license for this project.