Getting out of hand now, seem to have very frequent tab crashes, and a few Firefox has crashed. getting more and more frequent especially the tab crash.
Have Firefox open in first tab, try to go to fix crash as Firefox says. I opens ina second tab and before I can even read it I get the UGH the tab has crashed notice.
Alla svar (1)
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?
While still in Safe Mode,
In the address bar, type about:crashes<enter>. Note: If any reports do not have BP- in front of the numbers/letters, click it to submit them.
The crash report is several pages of data. We need the report numbers to see the whole report.
Using your mouse, mark the most recent 7 - 10 crash reports, and copy them. Now go to the reply box and paste them in.
For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support