The issue with Xorg failing to start appears to be an incompatibility between the VirtualBox Guest Additions and the new version of the kernel. There is a workaround in the bug report here:
http://www.virtualbox.org/ticket/6198 ** Bug watch added: Virtualbox Trac #6198 http://www.virtualbox.org/ticket/6198 ** Changed in: linux (Ubuntu) Status: New => Invalid -- VirtualBox Guest Additions stopped working with the 2.6.32-16 kernel https://bugs.launchpad.net/bugs/536929 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs