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Since upgrading to Firefox 5, each time I launch Firefox it opens in full screen mode. Is there a way to change this in preferences?

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I prefer the browser window to remain the same size I left it at when I quit Firefox. It starts to load at the same size, then jumps to full screen. It has also crashed a few times & I had to force quit twice. Please let me know if there are fixes for these issues.

I prefer the browser window to remain the same size I left it at when I quit Firefox. It starts to load at the same size, then jumps to full screen. It has also crashed a few times & I had to force quit twice. Please let me know if there are fixes for these issues.

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If you leave full screen mode (command+Shift+F) and close the Firefox application via "Firefox > Quit Firefox" to save that then Firefox should open the next time in normal mode.

If not then see:

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I tried your suggestion. It did not work. It still opens in full screen mode. The link you supplied pertained to Windows. I have a Mac & do not have localstore.rdf. Thank you for taking the time to reply.

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c uses the same profile folder as the Windows and Linux platform.

You can locate the Firefox Profile Folder via


Copy and Paste this code in the Code field in the "Tools > Error Console" and click the Evaluate button to see the location of the profile folder.

alert(Components.classes["@mozilla.org/file/directory_service;1"].getService(Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile).path);