I am doing a Boston butt right now I put the meat in around 1:00 but for the last couple of hours it has stalled at 105. I understand about butts stalling but seeing as how it hasn't reached the 140 degree mark yet and it's been cooking for 4 hours will it still be safe. It's finally starting to move up in temperature, finally. Just don't want to get sick from eating it. It's about 5:30 now. This is my first Boston butt some am a bit nervous about it. Thankfully the pork tenderloin and ribs are done we can at last eat that.