So, I've just realised something here. When you say these problems are happening, you meant that other people, who happen to be using your map mod, are having these problems. The NPC issues you've described are fixed as far as I can tell in OpenJK, and would only happen in JA++ as that seems to be the only up-to-date mod in the past few years. So the NPC problem is not related to OpenJK, but to JA++. As long as they have an up to date version of JA++, then they shouldn't have any problems. The timescale issue we're still looking at, but @@Raz0r tells me this has been a known issue in Linux dedicated servers since JK2.