I made something very stupid. I found a bug in Photo Album package that made it impossible to delete an album if you had renamed it before. All I got was a database error.
So I found a new version of the package at Jeff's site (http://xarg.net/), installed it and run the data model update scripts. Then, when I tried to get to the Photo Album home page, I always got an database error. I thought I could get back to an earlier version, but it wasn't that easy when you already had modified the data model.
At the end I thought I should make a clean install of OpenACS, since my other test instance seems to be a lot faster than "production" server which has a lot of unneeded crap in it.
So, to the question: The only important data that I have on the server is (I think) user data, lars-blogger data and comments (and some static pages, but moving them is not a problem). What would be the easiest way to get these data to the new instance as such, without losing anything important?