Xfce not locking screen on suspend

[Aidan Gauland <aidalgol@no8wireless.co.nz>]

Hi,

I'm using Xfce4.8 from wheezy.  I have ticked the "Lock screen when
going for suspend/hibernate" checkbox in the "Extended" section of the
Power Manager settings, but the screen is never locked when I bring my
computer back from suspend or hibernate.  This appears to be an upstream
bug, not a bug in the packaging, as this has also been reported in Arch
Linux: https://bbs.archlinux.org/viewtopic.php?id=80661

Can anyone else confirm this?

Thanks,
Aidan