Same issue here on Fedora 20: $ uname -a Linux timo-usersys 3.12.6-300.fc20.x86_64 #1 SMP Mon Dec 23 16:44:31 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
$ firefox -v (process:17784): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed Mozilla Firefox 26.0 $ cat /etc/redhat-release Fedora release 20 (Heisenbug) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1160569 Title: [regression] GLib-CRITICAL **: g_slice_set_config: assertion `sys_page_size == 0' failed To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1160569/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs