Tapping the Super key doesn't open the Dash (the Dash won't show up) when the focus is: on the desktop (when the panel says Ubuntu Desktop), on a Firefox, Thunderbird, gnome-terminal, Totem, Nautilus, Shotwell and the main LibreOffice window (the libreoffice startcenter). Tapping the Super still opens the Dash when windows of the following applications are focused (I checked only these): LibreOffice Calc, Writer and the LibreOffice options window (Tools/Options... menu item), UbuntuOne Control Panel, the Software Center, Empathy (main and chat windows) and from the non-default apps VLC and Clementine. I also noticed that when a gnome-terminal, Totem or Shotwell window is focused, tapping the Super twice opens the Dash, but double-tapping doesn't work for the other mentioned cases. Also this happens only when using the Compiz based Unity.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.6.0-0ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic i686
NonfreeKernelModules: fglrx
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,gnomecompat,move,mousepoll,resize,commands,grid,imgpng,vpswitch,snap,obs,unitymtgrabhandles,place,regex,wall,animation,expo,session,workarounds,fade,ezoom,scale,unityshell]
Date: Wed Mar 14 21:11:15 2012
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
SourcePackage: unity
UpgradeStatus: Upgraded to precise on 2012-03-13 (1 days ago)
Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 953089, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.