Very long domContentLoaded time in firefox test

The purple area is domContentLoaded, and its shown when i test my website with Firefox.
It’s a very long loading time: 6 seconds out of in total 9 seconds for the whole page (66% !). The problem is: I dont have a clue what domContent is being loaded and how to make it shorter. Is it maybe an interaction between various javascripts on my homepage ?

It’s the javascript that runs when the domReady event is fired i.e. the code attached via" window.addEvent(‘domready’,…

It’s always worth running a few tests (think Pat runs 9) to get a median run.

I repeated you test with three runs and in each case the scripts fired by domContentLoad executed much quicker, see: