Thanks everybody, seems the consensus is that it's stress. The thing that confirms it to me is that he was out all day yesterday and not locked in the torture chamber and this morning his poop was 50/50 which is a HUGE improvement over yesterday. So if we ever need to keep him confined somewhere and out of the basement, I have no idea where we're going to keep him, because I won't want to put him back in the bedroom/torture chamber!

Catnapper, I hadn't thought about the bed being for a sick person and that's why he couldn't be on it, but that makes perfect sense. I have no idea how the previous owner died, I just know that he died so it's entirely possible that he was sick for awhile (cancer maybe?). However, I have to say, if I'm that sick, I would want the kitties on the bed with me, but I know not all people are like that. Makes me feel sad for Jack.

But he's on the mend again and his daddy will be home sometime today, so that will make him extra happy. Can't wait to see the two of them snuggling on the couch tonight.