Facebook connection problems

i've been having problems connecting to facebook these past two days, i manage to be able to log in and see the home page, but i can't access any of the other pages
all other websites seem to be working fine though
i just updated to firefox 3.0.7 yesterday, but i dont think it's a firefox problem cuz IE doesn't work either nor google chrome.
i've already tried clearing my cookies and cache
any ideas?