firefox keeps crashing

[joe at actionline.com]

Brien Dieterie last wrote:
> You can also try a different window manager in case it is
> some bizarre gnome-shell thing. On the logon screen you
> should be able to pick from a few. If there is only one
> option I'd recommend installing Xfce or MATE to try.

Thanks, but I don't know how to do that. I'm using KDE (Mate?)
and I don't know how to add an additional (different) window
manager.