User Agent: Mozilla/5.0 (Windows NT 6.1; rv:38.0) Gecko/20100101 Firefox/38.0 Build ID: 20150121030203 Steps to reproduce: There are no such specific steps to reproduce. It usually happens when I m browsing a bit, or opening some heavy websites like keep.google.com, etc. It doesnt happen at the same sites everytime, but whenever I get the notification of web page causing slowdown, then it is sure that firefox will now load all the pages indefinitely. Actual results: All the pages across all the tabs load the web page again and indefinitely, and even on closing the suspected slowing-down tab makes no difference. You have to manually close firefox, kill all the processes from windows task manager( since firefox.exe and plugin-container.exe do not stop even after closing firefox. Expected results: On closing the suspected slowing-tab or webpage, firefox should resume to its normal behaviour rather than indefinitely loading webpages across all tabs

Please don't set the priority field.

what are the files your attached? If they are screenshots, attach them as jpeg or png, please.

I dnt know know how to save screenshots as jpg or png

(In reply to Loic from comment #3) > what are the files your attached? If they are screenshots, attach them as > jpeg or png, I have uploaded all the screenshots now

Did you test in safe mode? https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode And with a fresh profile? https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

With each update daily, the crashing is less frequent but prevalent, especially on opening large number of tabs loading heavy websites

Please anyone report if encountered

Mistakenly filed against Firefox 38 and should be instead 38 Branch. Sorry for the spam. dkl