my ip is temporarily blocked on facebook !! what to do?

I've been on Facebook for hours now, and I just got this red box at the top of my screen saying "many users on your IP and misuse or 'something' and you've blocked for two days," What's this? Please help me understand this.

--------------------solution----------------------

If you are seeing this error fix it by simply following these steps:

1. Click the Start button on your desktop
2. Go to Run (Windows XP)
3. Type in CMD press enter
4. Type in

   ipconfig /release

   then press enter
5. Type in

   ipconfig /renew

   then press enter
6. That’s it!