Thanks everybody for your feedbacks. What I would also appreciate is that you provide me what's inside /var/lib/patchmanager/ausmt/ausmt.log, so that I can track the issues.

What I think about this is that AUSMT needs to be tuned a bit because I think that it might do things well when you apply a sequence of patches (in the wrong order ?).

BTW, thanks a lot for being careful and helping each other when there are breakages