> I am not familiar with Firebug private browsing mode and search
> didn't give me any clues?
>
> Is there a way to know which mode I am in and deactivate it?
In FF 4+, Private Browsing mode is activated from Tools/Start Private
Browsing, a Start Private Browsing choice on the Firefox button menu,
or the Control-Shift-P keyboard shortcut.
Details are here: http://support.mozilla.com/en-US/kb/Private%20Browsing
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Dennis