The forums have moved to a new server. It may take a while for peoples DNS's to update to the new address. So you may get slow performance until that happens. It does not matter if your DNS hasn't updated, or you don't know what this means. Updated or not, it all points to the same forum/server regardless.
The slow down on the forums was caused by Apache2's ProxyPass being very slow. This forwards the connection to the actual forum server. Once your DNS updates, it will then connect to the forum directly, bypassing the slow Apache ProxyPass.
Please let me know if there are any issues. The server was put into read only, and a backup was extracted and applied to the new server. So nothing should've been lost.