I am running Windows XP, Service Pack 3, and IE7

When I am on facebook, I can't hardly click on anything. I can see the buttons. I see them depress when I push the button on the mouse, but nothing happens. It's kinda frustrating. After all that, I will be in the middle of playing Mafia Wars game on Facebook and I get this error.


"Microsoft Visual C++ Runtime Library
Runtime Error!
Program: C:\Program Files\Internet Explorer\iexplorer.exe
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information."

When I hit ok, it closes Internet Explorer.

Can anybody help me out with this?