Comment 38 for bug 1003950

I still have this issue in Unity. Latest version of 5.18.0-0ubuntu2. I'm on Ubuntu 12.04 LTS 64-bit (3.2.0-40-generic kernel). AMD graphics if it makes any difference. It will not open when clicked if the available updates are retreived on its own. Can always be opened through the dash or updates run through commandline instead. Please fix, or if the fix is produced like has been said, please push the update out.