I have to make a very sad announcement.
After several days working with a few friends who are much more knowledgable in linux then I am I have to conclude that all old information should be considered lost.
It is possible that with a lot of effort some of the posts might be recoverable from what is left of the original mysql tables, and I might be willing to give that a try later. (In that magical moment when I actually have time)
For now, I am setting up a meaner and leaner forum on the old location, which we will be able to use for up-to-date information.
I still have hope booxusers will rise like a phoenix from the flames.