Hmmm...
I just had something very odd happen to me...
While resting my character was woken up by about 4 Grizzly bears. I actually got a little message box telling me so (just like when you are attacked by assassins), and I was nowhere near Solstheim; indeed, I was in the Valenvaryon Propylon Chamber..
The only thing I can think of is that it might have something to do with the Bloodmoon Main Quest... though I have been at this point before (I've retrieved the totem but have not yet given it to the Skaal shaman), and nothing like this has ever happened. I also highly doubt it is a mod, since I don't have any Bloodmoon mods installed, at least nothing involving any quests....
There's no journal entry or anything either.
Er... has anyone else ever experienced being woken up by hostile Grizzly bears?
The fact that they were hostile was a bit peculiar too, because I have Sabre Girl's "Morrowind Ecology" installed.