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as of 2 daysago firefox has slowed
as of 2 days ago firefox has slowed down to a crawl when trying to search anything
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firstly you check for updates then clear your history and cache.
* Go to about:preferences and in General, uncheck the box for Always check if Firefox is your default browser.
- Go to about:preferences and in General, go to When Firefox Starts and select Show a blank page.
After using Firefox for some time, it starts using a lot of CPU process or RAM. To find out the cause of the slowdown, first try restarting Firefox in Safe Mode. This will make Firefox run without any add-ons or plugins. To do this, go to Options (the three-line icon at the extreme right of the URL bar) > Question Mark > Restart with Add-ons Disabled.
Firefox will restart and display two options: Start in Safe Mode or Refresh Firefox. Choose Start in Safe Mode.
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
https://support.mozilla.org/en-US/kb/firefox-takes-long-time-start-up
MemTest LAST UPDATED : 27/09/2013 Could you please run a tool from http://memtest.org/ in order to check the integrity of your RAM?
You will need a thumb or disk drive to install it on.
Start Firefox in Safe Mode {web link}
A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?