Forbidden You dont have permission to access / on this server. Apache/2.2.14 (Ubuntu

[tomtetlaw]

When I try to access the /var/www/ folder through apache, which is at http://tom-server/ from my Windows Machine, I get this error, even though it was working before with no changes:

Forbidden

You don't have permission to access / on this server.
Apache/2.2.14 (Ubuntu) Server at tom-server Port 80

This is my httpd.conf file:

<Directory "/var/www/">
Order Allow,Deny
Allow from all
</Directory>

What could I do to fix it?
The apache server is on my Ubuntu Server(10.04.01) box and the computer that it trying to connect to it is running Windows XP.

[kylegetson]

check to make sure that the directory /var/www/ is readable (at least 444, but more than likely it should be 755) and check the owner and group as well.