Also you will note that the artical you posted was published on March the 28th..
"Consumer technology now exceeds the average persons ability to comprehend how to use it..give up hope of them being able to understand how it works." - Me http://www.cybercrypt.co.nr
The next thing you want to do is locate "network.http.pipelining.maxrequests" and change the value to some number higher, if you were to set it to 10, it would make up to 10 requests at once.
Caution with this one, make that number too high and some folks/sites/servers etc., will interpet this as an attack!