The WRT54GL (Linux version) is supposedly much more stable than the regular WRT54G, too, which is what I have and what I assume Mullet has. I have a problem with my roommates not being able to get much of a signal on it wirelessly, but it's at least up most of the time. A lot of these wireless routers are pieces of, so if you're constantly using a lot of bandwidth they'll just die. If that's not the problem, maybe you can fine-tune things as per Baloki or someone with more networking knowledge can guide you.