Firefox and Chrome slow on localhost; known fix doesn't work on Windows 7

Question

Firefox and Chrome are known to be slow on localhost when IP6 is enabled. In previous versions of Windows, the simplest fix is to comment out this line from the hosts file,

Answer 1

A bit late for an answer but i tried all of the above and still it was slow for me on Windows 7. When I use localhost it took about 20+ secs for page load.

Firefox improved with @Mark Mayo's answer but not all the time and Chrome was still very slow.

I found a solution here

Basically, i added the following lines to Apache httpd.conf file (as they weren't there already)

AcceptFilter http none 
AcceptFilter https none 
EnableSendfile off 
EnableMMAP off

Tested both Chrome and Firefox and the page loads instantly