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I have a bug: I couldn't drag and drop windows. I reinstalled firefox and created a new profile - and it was gone.

Now, how the heck should I copy all the settings and plugins and plugins settings, but only those which doesn't cause the bug???

(This sux)

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Open the old prefs.js and the new prefs.js and copy paste the settings you need into the prefs.js.

I use WinMerge for this.

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Hem its 277 kb big, and what about the rest of settings and addons? – Smit Johnth Mar 19 '13 at 5:35
only copy the settings of addons you've reinstalled. Ignore the rest. – magicandre1981 Mar 19 '13 at 5:36
use the old Profile with Firefox again, and here you can open the Adblock Plus options and export the settings. Other Addons also offer this. – magicandre1981 Mar 19 '13 at 9:58

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