LXC is great but does have its limitations. We are currently building a vagrant like solution and GUI for LXC/Vagrant/vSphere/ESXi/Xen/AWS etc which will launch in beta in the next couple of months - sign up at http://10xlabs.net if you are interested in following progress
There seems to be no other way to communicate with you or 10xlabs, so excuse me for cluttering this thread.
You have an error on the sign up page - 'lounch' should be 'launch'.