The following lesstif bug sounds somewhat similar to this bug: https://sourceforge.net/tracker/?func=detail&aid=2912821&group_id=8596&atid=108596, although unfortunately, there's no traction or useful information there w.r.t. what the root-cause is.
The lesstif bug points at Red Hat bug https://bugzilla.redhat.com/show_bug.cgi?id=543647. That bug was apparently solved by a new X server RPM. I *think* the patch is attached to bug http://bugs.freedesktop.org/show_bug.cgi?id=25400 as 0001-dix-if- owner-events-is-true-for-passive-grabs-add-th.patch (that fd.o bug does mention an unspecific ddd issue). ** Bug watch added: SourceForge.net Tracker #2912821 http://sourceforge.net/support/tracker.php?aid=2912821 ** Bug watch added: Red Hat Bugzilla #543647 https://bugzilla.redhat.com/show_bug.cgi?id=543647 ** Bug watch added: freedesktop.org Bugzilla #25400 http://bugs.freedesktop.org/show_bug.cgi?id=25400 ** Also affects: xorg-server via http://bugs.freedesktop.org/show_bug.cgi?id=25400 Importance: Unknown Status: Unknown -- Right click on graph'ed obj locks ddd/Ubuntu https://bugs.launchpad.net/bugs/574157 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