So its only Firefox? Have you tried a reinstall or using the previous
version?

Usually there are smoking guns in various log files when it occurs. It
sounds like a memory leak if it crashes the whole machine. However a couple
of years ago I had a weird problem like this with word, and in the end it
turned out to be hardware. One ram stick was suspect and fitting another
fixed it.
Brian

--

This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"gareth evans" wrote in message
...
Any known bugs here? ...

W10 with FireFox

Usually in the evening.

I'll look at both of my gmail accounts, but when
signing out of the second, the laptop freezes with
the disk light on.

There's no keyboard response in FireFox, not even
to Alt-F4, and no mouse cursor.

There's no Internet activity indicated on the
LEDs of the router.

The only recourse is to shut down by an extended
pressing of the power button.

It's only been happening in the last week or so.

TIA