I know the golden rule of website speed.. "Minimize HTTP Requests" .. and you get faster loading of the page..
We need to reduce the number of files loading in each page as DeeEmm said by melting them into one or as few as possible.. I've raised this problem a few months ago just after the first public alpha (alpha 13 I think) was released, boonex team did a great job reducing the size and the ammount of the external files..
We really need to do something with this and continue improving see more loading speed..