Ubuntu 11.10 and Thunderbird 9 and addons

Install Thunderbird 9.0 for ubuntu 11.10, source.
sudo add-apt-repository ppa:ubuntu-mozilla-security/ppa
sudo apt-get update
sudo apt-get install thunderbird

Addons:
AddressBookTab
CompactHeader
Exchange 2007/2010 Calendar and Task Provider
Google Contacts
Lighting
No message Pane Sorting by Mouse
Provider for Google calendar
SmartTemplate 4
Folderpane Tools

Turning:
- remove all controls(button, search area) from main toolbar to economize on vertical space - as toolbar contains never used buttons.

Result:

to show buttons for reply/forward/.... you can change preferences of CompactHeader, by right click over mail header/panel, select "CompactHeader Preferences" and select "right", result is below: