Has anyone set up a few WHM/CPanel servers into a load-balancing, high-availability cluster?

I would like to host many CPanel accounts across multiple servers, so that when one server goes down (as bu*st.net does so frequently) another server can take over and serve that domain (as well as ssh logins, ftp, email, etc).

I know there are many docs and infos on setting up linux HIgh-availability, such as:
- http://linux-ha.org/
- http://www.linuxvirtualserver.org/
- http://freshmeat.net/search/?q=high...ection=projects

I would like to see a bunch of real WHM/CPanel servers doin' love on a load-balancing, high-availability cluster.

Any experience in such, as well as partial implementations, such as only filesystem redundancy across servers with Coda ( http://www.coda.cs.cmu.edu/ ) or Inter-Mezzo (inter-mezzo.org) would be of great help.