In reply to rjek:
True but what might really be nice is some VirtualRPC variant which does *not* rely on some OS underneath it but runs with no underlying OS, that is kind of is the OS itself.
Or since that is probably asking too much due to need of hardware drivers a VirtualRPC coming with its own Linux variant which is based on some standard Linux distribution, be it debian (preferred) or RedHad or SuSE or the like. This approach is e.g. used by VMWare ESX server which you get as a package containing the RedHat distro and a special ESX linux kernel. The underlying Linux should then offer just what is needed for VirtualRPC to run and support would be less complicated since with this the underlying Linux is known to VA.