Multiple monitor panels
Package to install gnome extentions using the browser: The extention driver is available in Universe repositories
To install package type:
sudo apt-get install chrome-gnome-shell
In GNOME you can have multiple monitor panels using this extention
https://extensions.gnome.org/extension/921/multi-monitors-add-on/
This version is yet not compatible withje GNOME 4.2
Dash to Panel on bottom:
https://extensions.gnome.org/extension/1160/dash-to-panel/
Arc Menu in panel
https://extensions.gnome.org/extension/3628/arcmenu/
To be able to activate Gnome extentions from firefox, install this Firefox extention:
https://addons.mozilla.org/nl/firefox/addon/gnome-shell-integration/