I think the problem has to do with ureadahead. if you install something that changes the boot process, first boot will succeed. Second boot will fail. Try installing bootchart and reboot.
i attached the bootchart of the successful boot. ** Attachment added: "ubuntu-lucid-20100306-4.png" http://launchpadlibrarian.net/40360343/ubuntu-lucid-20100306-4.png -- gdm/x fails to start with error "Broken Pipe" at boot in Xubuntu https://bugs.launchpad.net/bugs/519641 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