Seems that this bug is described here: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/557810
-- System freeze on User switching https://bugs.launchpad.net/bugs/584111 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
