Comment 5 for bug 1436037

It happens again when I login yahoo mail.

I had similar problems with firefox 36 on Lubuntu (and Ubuntu). Firefox crashed on certain websites and when I clicked "x" to close the window, a message window appeared:

The window "Mozilla Firefox" does not seem to be responding. Do you want to force it to exit by sending the terminate signal?

I did a bug report for this here:

https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1434848

The problem with firefox happened especially on certain sites as:

http://www.agame.com/
http://www.linuxquestions.org/

Now I try with SeaMonkey on these sites, and it crashes too.