Hi,
yes, I know that multiple user support an multiple VM support are
different issues. Multiple VM aproach has nothing to do with acces
control or some level of object security. It just attempts to solve
performance, preemptive multiprocessing and stability problems (may be
some other). In this way it wouldn't be so easy for one user to cause
the crash of the whole system.

Peter, your stuff sounds interesting. How do you solve access control
problems and concurency (transaction...). And what about preemptivness?

Martin.