I am using Firefox 3.6.3 and have experienced the same problem this week. The left and right columns load, but the newsfeed is gone. If you scroll down to where the right column ends, newsfeed begins there. Facebook works fine on Safari, and on an older version of Firefox I have at home.

Same problem for me.

I found a solution. I uninstalled Firefox 3.6.3, then installed an earlier version. That fixed the problem for me. Good luck!!

I was having the same problem. I have a new toshiba that allows me to adjust the screen size (just like on an Iphone) where if I move my fingers apart or closer together the image shrinks or grows. I adjusted my display slightly that way and everything fell back into place! I hope that helps!