I've just been linked to a fedora buglisting... https://bugzilla.redhat.com/show_bug.cgi?id=506220 suggesting glib is the culprit. Further searches on glib found this... https://answers.launchpad.net/ubuntu/+source/glib2.0/+question/77380 so I'm going to try the update mentioned there (a patched glib2) and report back.
** Bug watch added: Red Hat Bugzilla #506220 https://bugzilla.redhat.com/show_bug.cgi?id=506220 -- Dual head opens applications on main display, regardless of expected display https://bugs.launchpad.net/bugs/418108 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