Can Lion Server do this, or does this even require Server? Or can Macs ever do this, period? I want an always-on Mac with multiple user logins that are accessed remotely via VNC from other apples devices (MacBooks, iPads, etc). And I need this Mac to allow multiple remote users to log into their accounts simultanously and run applications, etc., each viewing their own desktop simultaneously. What I do not want is for the Mac to enforce only one active user at a time, visibly controlling the screen it's connected to.