I'm gonna take a stab at this one. To be frank: I'm new here so wait for someone with a little more experience to reply before freaking out.
Are you talking about the individual live tiles connected to those individual apps? If so, I only have experience with the FB app and I deleted it and just pinned an ie bookmark to the front page. Hated the darn thing. The ME tile does its job pretty well for everything but messages and event notifications. Also, none of the tiles can update more than once every half hour. MOST tiles default to once an hour. When things aren't working it's easy to get impatient. Some updates can be as late as 20 minutes past their intended time even though they are operating properly. It's also important to note that push updates and tile updates are two different things and operate through different systems.
So, first question: We talking 3rd party app tiles, or the first party ME tile?
Second question: have you waited more than 90 minutes without opening the app (opening it resets the time in the case of 3rd party apps) just to make SURE tile updates aren't working?
After that get back. Either someone here or myself will do our best to help out.