I definitely can reproduce this on an up-to-date version of Trusty. Will file an upstream bug.
My details: Linux lubuntu-trusty 3.13.0-44-generic #73-Ubuntu SMP Tue Dec 16 00:23:46 UTC 2014 i686 i686 i686 GNU/Linux lxsession: Installed: 0.4.9.2+git20140410-0ubuntu1.1 Candidate: 0.4.9.2+git20140410-0ubuntu1.1 Version table: *** 0.4.9.2+git20140410-0ubuntu1.1 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/universe i386 Packages 100 /var/lib/dpkg/status 0.4.9.2+git20140410-0ubuntu1 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe i386 Packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1347402 Title: lxsession-default webbrowser crashes session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxsession/+bug/1347402/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs