Whenever a new window (or even Firefox program windows like Add-ons, Bookmarks, Settings, etc) is opened, Firefox freezes for 30+ seconds before opening it.

I have reset Firefox, then reinstalled, removed all of the extensions and plugins, uninstalled and reinstalled Flashplayer, updated Java, etc. I have also created new profiles, which have the same problem.
The problem does not appear in Safe Mode, which is odd because I have disabled all of the built-in extensions and have run the program in regular mode, and the problem still occurs. Right now I am using no extensions, no plugins, and no themes, and Firefox still freezes for a short period of time whenever I try to open a new window.
This problem does not happen in IE or Chrome. I have not installed any programs recently; the problem started happening randomly.

Hi,
[https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode] also disables the themes ('''Appearance''') in '''Tools''' ('''Alt''' + '''T''') > '''Add-ons'''. and hardware acceleration - the manual setting is '''Tools''' > '''Options''' > [https://support.mozilla.org/en-US/kb/Options%20window%20-%20Advanced%20panel?as=u Advanced] > '''General''' > '''Use hardware acceleration when available'''. All these settings/options/add-ons can also be individually or collectively disabled/enabled/changed in Firefox normal mode to check if a theme, or hardware acceleration is causing issues. Disabling/enabling hardware acceleration, and some types of add-ons in normal mode may require a Firefox restart - a quick way to restart Firefox is to press [https://developer.mozilla.org/en-US/docs/Tools/GCLI '''Shift''' + '''F2'''], type '''restart''' and '''Enter'''.

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Whenever a new window (or even Firefox program windows like Add-ons, Bookmarks, Settings, etc) is opened, Firefox freezes for 30+ seconds before opening it.

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