Server appears to have lost ability to read PHP files with LAMP

view story

http://serverfault.com – I have LAMP installed on a PC that is running Ubuntu 11.10. LAMP was running fine but I had to restart the PC because Unity was messing up (as it often does) and the tool bar had disappeared. When it started up, I was unable to fire up any php files. I have a file index.php in /var/www. It is owned by www-data as is the directory that it is in. The LAN address of the server is However when I type into the URL box on Mozilla FireFox, I get Unable to connect Firefox can't establish a connection to the server at This server is connecte (HowTos)