Facebook notification problem?

[Elise]

Starting yesterday, my Facebook notifications have been acting up. I'll check them, then like 10 minutes later, the same ones pop up.
Also, comments aren't showing up. I can click on the notification saying someone commented on my status, but they won't show up on the thing they commented on. And the people didn't delete it.
Now, the same notifications are popping up over and over again, but saying they were done in different times. 8 minutes, then 7 minutes.
How do I fix this, and what's going on? >_<