The server is working again now that we've upgraded to the new Bukkit, but the plugins have not been updated and may therefore be buggy or cause lag.
I'm looking into updating them as we speak, so hopefully things will function as they should soon. In the meantime, be careful in the safe area, it might not be safe at the moment!

Long story short, Minecraft 1.5 came with some bugs that will likely be fixed soon, leading the people who make Bukkit (a plug-in thing which helps the server run) to delay their newest version until most things work normally.
So, server no worky until then.
I'll post an update when the server works again.