Woke up this morning and tried to pull the notification bar down to open unread text messages. however the damn thing doesn't expand down. I can use the settings button and click notifications to open that window up. If I do that, I can swipe the notification screen up and down but once it's closed i can't pull it back down without going to settings first. I've cycled the battery, checked for system updates, then did a master reset. Still doesn't want to cooperate.