Their webpage has this to say about it in the FAQ, so I would say nope.
"Within the scope of microkernel operating systems, a multiserver spreads the operating system functionality over multiple user processes. Note how this differs from a single-server microkernel that concentrates all these functions into a single user process." - http://www.helenos.org/wiki/FAQ
"Within the scope of microkernel operating systems, a multiserver spreads the operating system functionality over multiple user processes. Note how this differs from a single-server microkernel that concentrates all these functions into a single user process." - http://www.helenos.org/wiki/FAQ