My network has been with that issue for such a long time that after trying many ways to solve the problem--including some suggestions received from the staff personnel--I have decided to re-make everything.
However, I need some advice. I have a few thousands users and sub-sites that I want to "keep" somewhere in order to put them back into the new network i want to make after completely deleting the current one.
My guess is to export the files to somewhere and then import them back to the new site. Thus my question is: what is the best way to do this?