http://bugs.winehq.org/show_bug.cgi?id=58468
--- Comment #6 from Nikolay Sivov bunglehead@gmail.com --- I did a quick check, and it's not exactly clear if namespace API is really critical, adding more stubs eventually leads to namespace syscalls that we obviously don't have either. I got to CreateEvent() failure, which could be some other security check problem.
Best way might be to work on namespace API properly, and see what's next.