*** This bug is a duplicate of bug 523755 ***
https://bugs.launchpad.net/bugs/523755
** This bug has been marked a duplicate of bug 523755
Launching twice results in duelling copies
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Converting Software Updates into a proper System Settings panel, as
planned, would be one way of fixing this bug.
https://wiki.ubuntu.com/SoftwareAndUpdatesSettings?action=diffrev2=22rev1=21
Probably there is a simpler short-term solution, though, using
GApplication/GtkApplication.
