Due to a big security hole some 3rd party got access to out MySQL backup utility. It has been used to run simultaneously restores in order to crash the MySQL DB. And they did succeed with that. But since we had nearly daily backups it wasn't a problem by it self. We could just restore. However, whoever did crash the DB also deleted all DB backups and snapshots. The latest backup admins had downloaded and stored was from 23.08.2008. So the only option was to use that DB to restore PvXwiki...