Pre 13.04, the HUD could access anything on the global menu. For eg, hitting alt and typing shutdown brought up the shutdown option, it could be used to open applications integrated into the sound and messenger menu like rhythmbox, banshee and thunderbird. From 13.04 onwards, on any fresh installation and upgrade, i find this feature does not work. I atleast think its a bug and should be fixed soon.
Thanks for reading and have a nice day :)
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: hud 13.10.1+14.04.20140218.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-14.34-generic 3.13.5
Uname: Linux 3.13.0-14-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Mar 3 20:24:22 2014
InstallationDate: Installed on 2014-03-02 (1 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140124)
SourcePackage: hud
UpgradeStatus: No upgrade log present (probably fresh install)
upstart.window-stack-bridge.log:
QDBusConnection: name 'org.ayatana.bamf' had owner '' but we thought it was ':1.7'
QDBusConnection: name 'org.ayatana.bamf' had owner '' but we thought it was ':1.5'
Status changed to 'Confirmed' because the bug affects multiple users.