All of a sudden, my fatigue will drain to negative numbers and nothing will restore it. So far, it has happened in a Deadric shrine and in the Legion Chambers in Ebonheart. Other than that, it seems to be completely random.
Okay, I think I found the culprit. Whenever I get near or use a torch that is/has been in the inventory of one of my Oblivion conpanions, the fatigue drain occurs. I don't know why it happens with this particular companion, or why the bug just showed up now, but I will just have to be careful with torches around the Blood Lady.
This is related to a companion mod rather than to Morroblivon as far as I can understand it ... please reopen if its related to Morroblivion only.
#1
I mean, other than occuring in interior cells, it seems completely random.