Since the last three updates, FF has crashed/hanged much more often. I have the same add-ons for over a year now and no change has been made. I understand this is probably related to the add-ons. But if no new add-ons has been added, why would FF became so unstable?

Something in the last few updates must have broken FF somehow and make it so unstable. I have been using FF since it first came out, and it has never been this bad.

If you have submitted crash reports then please post the IDs of one or more recent crash reports that have a "bp-" prefix:

• bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

You can find the Report ID of recent crash reports on the "Help > Troubleshooting Information" page (about:support).

• Click the "All Crash Reports" button on this page to open the about:crashes page and see all crash reports.

If necessary then you can open about: pages via the location/address bar.

See:

• http://kb.mozillazine.org/Mozilla_Crash_Reporter
• https://support.mozilla.org/kb/Mozilla+Crash+Reporter

You can check if it helps if you start Firefox in Safe Mode by holding down the Shift/Options key.

• https://support.mozilla.org/kb/Safe+Mode