Update:
I lied when I said I had not made any changes...sorta. The other day, I accidentally erased my C07 Transparent Slider program. Simple enough...google'd it and found this:
http://forum.ppcgeeks.com/showthread.php?t=87540
Assuming it was the same program, I installed it and facebook stopped working. When I uninstall it, facebook functionality returns to normal. So, I guess the question then becomes how can I get that slider file that didn't mess it up? Anyone else using the same slider?