Vmware Fusion + Ubuntu 12.04, shortcut I'm running vmware fusion 5 under OS X Mountain Lion. My virtual machine is running Ubuntu 12.04.
I have two fastidious shortcuts which I would like to disable:

When I press Command ⌘, Ubuntu opens the dash and shows under the text field a set of icons.



When I press the Option ⌥+` keys (which I use for making accented letters) Ubuntu opens the dash without showing the icons under the text field.


How can I disable or block these shortcuts?
I tried playing around with the keyboard settings in Fusion, in particular editing particular profiles. 

This did not change the behaviour of ⌘ in unity. I did not play around with ⌥+` as I could not replicate your Ubuntu behaviour.

The only way I found to disable the ⌘ shortcut is to install gconf-editor and remove the shortcut from within Ubuntu running the following commands:

sudo apt-get install gconf-editor
gconftool-2 --set /apps/compiz-1/plugins/unityshell/screen0/options/shortcut_overlay --type bool false