Our version of phpbb is 3 versions out of date, so I'll be attempting to upgrade us later today. You probably won't see a huge difference when it's done - not like when we moved from phpbb2 to phpbb3. But, as the bots have finally breached our outer wall, I'm hoping the latest version has enhanced security to defeat them. I guess we'll find out...
I'm backing up our database at this moment, so if you make any posts that you don't want lost between now and when the backup is complete, you might want to save them to your local computer.
Also, based on our last experience, you might want to download and save your avatars. Just in case
During the actual backup, the board will be unavailable. I'm hoping it will only be for a few minutes, but I don't know. You can check for updates at that TOB thread that you've all bookmarked.
Wish me luck!