Unable to open any sort of window in Firefox

Hey guys, this issue started happening for a while, I had Firefox and Snow Leopard and everything worked fine. I think the issue began happening after a specific version of OS Snow Leopard but I am unsure.
I ended up reformatting my entire computer with OSX Lion, thinking that somehow maybe something was just corrupted on my old install. This however was not the case, Firefox fails to open any sort of window.
By window I mean, "view source", "Tools -> downloads", or any other sort of Firefox window that would make it pop up anything. None of that data works. This is a brand new install of Firefox along with a new install of OSX Lion, I have no plugins etc... yet the issue continues.
I have another Mac which doesn't experience this issue, however that is a newer Mac the end of 2010, and the Mac I am currently using is from 2008.
I have tried downgrading to 5.0 and it's the same issue. I will try downgrading to 4.0 and respond back with any info I may gather, hopefully this is an easy fix.
Thanks!

Do you have 2 monitors? If so it may be related to https://support.mozilla.com/en-US/questions/802302
For me I had to make arrange my secondary monitor to be level with my primary monitor and it now works.

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Back up all data. Don't continue unless you're sure you can restore from a backup, even if you're unable to log in.
This procedure will unlock all your user files (not system files) and reset their ownership and access-control lists to the default. If you've set special values for those attributes on any of your files, they will be reverted. In that case, either stop here, or be prepared to recreate the settings if necessary. Do so only after verifying that those settings didn't cause the problem. If none of this is meaningful to you, you don't need to worry about it.
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Unable to open any sort of window in Firefox

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