It seems that firefox causes this bug. I mean the one i wrote above. I have made an upgrade of firefox today and i don't know is it a firefox itself or some faulty page crashed gdm. Anyway i've copied firefox profile which immediately craches gdm when i try to restore a ssesion. I may attach as well, but its full of my personal data i don't want to lose.
root@it-chief:~# dpkg -l | grep firefox ii firefox 4.0.1+build1+nobinonly-0ubuntu0.11.04.3 Safe and easy web browser from Mozilla ii firefox-globalmenu 4.0.1+build1+nobinonly-0ubuntu0.11.04.3 Unity appmenu integration for Firefox ii firefox-gnome-support 4.0.1+build1+nobinonly-0ubuntu0.11.04.3 Safe and easy web browser from Mozilla - GNOME support -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/539440 Title: gtkwidget.c:5636: widget not within a GtkWindow -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs