Firefox 42 seems very unstable

[Debskinner]

Since upgrading (?) to FF42, I have been experiencing many crashes - far more than in previous versions, although, to be fair, I also upgraded to Win 10 at the same time.

With a new PC, I installed a virgin version of FF & then added my various addons - the one that is getting to do the most work is session manager! Every time it crashes I click the send report to Mozilla button.

I haven't tried running FF in safe mode, but I am running it on another couple of PCs (2 are XP Pro & 1 is Win 7 pro) & they have all been crashing too - possibly not as much, but they aren't used as much.

Any ideas?
Thanks

Win 10 home, 64-bit 16GB RAM
Addons installed
Session Manager
Adblock Plus
All in one Sidebar
IE Tab 2
Lightshot screenshot tool
S3 Google Translator
Roboform Toolbar
Tab Mix Plus
Tab Data

[therube]

about:crashes, the last few related crash report URLs?

[DanRaisch]

Have you confirmed that you have updated all of the installed extensions to the latest available version?
Try running in Safe Mode to rule out issues with the installed extensions.