Ubuntu Security Notice USN-1463-5
June 27, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
Popup menus were not working in Thunderbird under Unity 2D when started
from the launcher.
- unity-2d: Unity interface for non-accelerated graphics cards
USN-1463-2 fixed a bug in Unity 2D exposed by a recent Firefox update. It
was discovered that the issue was only partially fixed on Ubuntu 11.04.
When Thunderbird was started from the launcher, Thunderbird was still
unable to obtain pointer grabs under certain conditions. This update fixes
Original advisory details:
USN-1463-1 fixed vulnerabilities in Firefox. The Firefox update exposed a
bug in Unity 2D which resulted in Firefox being unable to obtain pointer
grabs in order to open popup menus. This update fixes the problem.
The problem can be corrected by updating your system to the following
After a standard system update you need to restart your Unity 2D session to
make all the necessary changes.