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I am using Firefox 3.6.12, when I inspect the site I am working on with Firebug, all the Java script files are requested/loaded in sequence, meaning the page takes a long time to load.

When my colleague does the same thing with the same browser, the JavaScript files are requested in parallel. Is there a setting for this?

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Is it a Firebug thing? Does the site load slowly when Firebug is disabled? What about for your friend? – Gaz Davidson Nov 18 '10 at 16:06
I understood that sequential loading of JS files was normal; does your colleague have any plugins no their profile that may have modified this? Have you taken file caching in to account? – DMA57361 Nov 26 '10 at 13:08
up vote 1 down vote accepted

Visit 'about:config', filter by 'network.http.pipelining' and set the entry to 'true'.

If the entry doesn't exist you can create a new Boolean entry that's set to 'true'

See the Knowledge Base if you're not familiar with this interface.

Note that doing that can cause websites to react erratically. Many web developers assume (quite reasonably) that JS scripts will run sequentially. This will likely break stuff!

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