Okay, so I was fighting that Sigdis character you run into in the barrow on the little island beside Falkreach, (the one where you go to find Freyda's remains) and my weapon disappeared during the fight. At first I thought it was a spell he used to disarm me, so I equipped another and pounded him to oblivion. (no pun intended) Well, when I got done with the fight, I looked around all over to see if I could locate my sword and nada. Nowhere to be found. What gives? Did he banish my sword to another realm or what? What the hell is going on? Has this happened to anyone else? Not sure if it was intended or just a bug.

This happened in Oblivion too , sometimes they disarm you and your weapon goes flying all over the place , use a torch to find it if you can't just reload, yer weapon might be below the floor or behind a wall ... gone in to oblivion.
I ussualy can find my weapon after a while on the floor but i need a torch/light spell, but if it bugged behind a wall i have to reload.

Thanks, Sir Drake. I'll try reloading to an earlier save. Hopefully I have one that is not to far from where I am now. I just saved after I lost it to post here.