I can't access my facebook. Facebook homepage appears but when I'm logging in, all i can see is a blank page. I can't read my inbox, view my friends, upload pics and stuff. I tried to open twitter, too, but it said i have to re-enable jave script in my web browser (Internet Explorer) but it's already enabled and nothing happened. I even upgraded java to its latest version but nothing happened. But besides the two, I can open other websites. Also, my windows media player, windows sidebar and macafee antivirus is not working. I keep clicking on them to open but nothing appears. My OS is Windows Vista. Could you please tell me what to do?