I can't log onto facebook

i guess ur using a licensed and updated antivirus (i prefer avg/kaspersky)..!!
this is a common problem now days, probably itz caused by a virus/trojan..

try using only --
http://login.facebook.com/login.php

download microsoft KB890830, install n run

also possibilies of:
u may not hv java runtime/adobe flash player/shockwave player installed..
the windows firewall is limiting the site..
may b ur antivirus is doing so..
some spyware/trojan horse also may play foul..
sometime it also depends upon the browser u r using..
may b it is black-listed or restricted by using 'content advisor' (in case of ie) in ur computer by some user or the above..
may b it is being filtered by the 'phishing filter'..
there may b possibilities that the site may contain 'active content'..

howevr i/we'll try n make u know..
but b sure u pass positive with all the above criteria....

Nancy, The following could go wrong while logging into FaceBook: a) There being no internet connection. Ensure that the internet connection is working. b) The Login IS and password could be wrong. Ensure that both these are correct. Sometimes we press the numlock inadvertently and then there are problems if you are on a laptop. Please ensure that all the little green LEDs are off. If you have ensured all these, there is no reason why you should not be able to log into FaceBook.