When I booted up Mandriva 2006.0 a few days ago, it started in graphical mode, runlevel 5 (not the way I'd had it set up) and acted as though it was going through the last part of the operating system install, among other things prompting me for a new root password without asking for the old one.

I have no idea why it did this since I installed the present installation months ago and have had no problems with it until now.

What disturbs me is that Mandriva spontaneously and without previous warning prompted for a new root password, so anyone could have gotten in at that point.

Do any of you have any idea why Mandriva might have gone into install mode like that, and what I might do to prevent if from doing so in the future?