Those issues should be no problem whatsoever. I'm actually posting from Netscape within the Bluebox on a February build of X Server, and I'm confident that netbooting shouldnt be a problem. The initial load to transfer the kernel is no big deal, and in the example where the harddrive was removed, the rest runs from the server over filesharing, which most of you are probably experienced with right now, in terms of load and server capability. Bear in mind also that X Server is preemptive and protected and all that other fun stuff, so it's considerably faster for filesharing than the current MacOS, also.