Already refreshed; keep getting "Firefox is not responding"! Painfully slow. WHY?
If I type a word, it appears 30 seconds later!!!!!! If I'm browsing, I constantly see "Firefox is not responding" all the time. I already restored to default settings last week; it just got worse. Cleared my cache and cookies - no change!!!!!!!
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Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.
A small dialog should appear. Click Start In 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