No link http://mzl.la/1BsPzbi eu segui as instruções e consegui (abaixo) a informação sobre o crash report solicitada para auxiliar na solução do problema: UUID 18672c33-525e-48f5-9f97-775462160304

Encontrei mais um crash report: UUID 5be48905-d63d-4e45-97eb-0545e2160304

Mais um crash report: UUID 45cdc8a2-4603-40b9-b58b-e52a72160304

Do mesmo jeito que o problema veio ele se foi, agora está tudo normal e eu não fiz nada...

The crashes are shutdown hangs where Firefox takes too long to close and a crash is forced. *Firefox 44.0.2 Crash Report [@ shutdownhang | RtlpWaitOnCriticalSection | RtlpEnterCriticalSectionContended | ntdll.dll@0x1dc64 ] If you use "Clear history when Firefox closes" then try to disable t5his feature. *Tools > Options > Privacy > Firefox will: "Use custom settings for history": [X] "Clear history when Firefox closes" > Settings *https://support.mozilla.org/kb/remove-recent-browsing-search-and-download-history *clearing "Site Preferences" clears exceptions for cookies, images, pop-up windows, and software installation and exception for password and other website specific data ---- Create a new profile to test if your current profile is causing the problem. See "Creating a profile": *https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles *http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems. *http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox Do a clean reinstall of the current Firefox release and delete the Firefox program folder before installing a fresh copy of the current Firefox release. *Download the Firefox installer and save the file to the desktop<br>*https://www.mozilla.org/en-US/firefox/all/ If possible uninstall your current Firefox version to cleanup the Windows Registry and settings in security software. *Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions. Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer. *(32 bit Windows) "C:\Program Files\Mozilla Firefox\" *(64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\" *It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling. *http://kb.mozillazine.org/Uninstalling_Firefox Your personal data like bookmarks is stored in the Firefox profile folder, so you won't lose personal data when you uninstall and reinstall or update Firefox, but make sure NOT to remove personal data when you uninstall Firefox as that will remove all Firefox profile folders and you lose your personal data. If you keep having problems then create a new profile to test if your current profile is causing the problem. ---- *http://kb.mozillazine.org/Profile_folder_-_Firefox *http://kb.mozillazine.org/Profile_backup *http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall