Comment 12 for bug 497883

Retesting the bug reveals it's gone...

Behaviour was;

Enable desktop sharing, icon appears in the app-indicators
Disable desktop sharing, icon remains in app-indicators
Attempt to enable desktop sharing fails, vino-preferences hangs

Behaviour is (in BASIC because we all like to get nostalgic);

10 Enable desktop sharing, icon appears in the app indicators
20 Disable desktop sharing, icon disappears from app-indicators
30 GOTO 10

... To be clear I haven't changed the binaries at all

I will test further tomorrow, after rebooting the VM to test if this is a one time problem