How to download more then the Firefox Download limit of two files at the same time

According to Lunarmedia Blog:

Firefox have this limitation of downloading only 2 files at one time and always have to wait for the available slots after one of them is completed before able to download again.

This limitation sometimes is a bit problem for me as I download lots of files everyday. So after seeking out the solution via the above mentioned blog, I finally found the answer!

To Unlock the limitation simply follow the steps below.

Step 1 : type "about:config" in the address bar without the quotes

Step 2: Then search for this: network.http.max-persistent-connections-per-server, double-click it and change the number 2 to e.g. 10.