I haven't been following update notices recently. When the update came, I immediately accepted it without considering possible problems. Not my brightest moment.
That being said, I just gave S-Note another whirl and it seems to be running properly now. Maybe it previously was updating apps in the background while I was trying to run S-Note or it might have been trying to connect to wifi. Something like that could have bogged it down. I was having to frantically take notes at the time so I didn't think to check what else could have been going on. That's the only problem I've noticed so far. I haven't had time to give it a full check yet, however. If more problems crop up, I'll probably do a a factory reset.