Thank you for your bug. What version of Ubuntu do you use? Could you get a backtrace of the freeze as described on https://wiki.ubuntu.com/Backtrace? That works fine on my feisty desktop
** Changed in: control-center (Ubuntu)
Assignee: (unassigned) => Ubuntu Desktop Bugs
Status: Unconfirmed => Needs Info
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gnome-sound-properties freezes
https://launchpad.net/bugs/70515
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