Firefox "hangs" (freezes)
In the past week or so, Firefox has unexpectedly "frozen" and does not respond. I have not loaded any new programs during this period. The only way I can get Firefox to run is to end all the Firefox processes in Task Manager and restart it. I also noticed that there are usually 9 firefox processes running in Task Manager.
Opaite Mbohovái (1)
More than one process is normal for the current Firefox. http://www.ghacks.net/2016/07/22/multi-process-firefox/
Multi-process Firefox is codenamed "e10s". https://wiki.mozilla.org/Firefox/multiprocess
Start Firefox using Troubleshoot(Safe) Mode {web link}
A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?
https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding
https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster
https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix
https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram
https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding