Lionel, here are the logs you requested in comment 14. I hope they are meaningful to you.
** Attachment added: "xfce.log.tar.bz2" http://launchpadlibrarian.net/29547134/xfce.log.tar.bz2 -- Multiple instances of xfdesktop started simultaneously https://bugs.launchpad.net/bugs/329616 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
