update-manager is closing after authorization to install updates

[Benedikt]

Update-manager is asking for authorization if an update has new dependency. If you are waiting to long (e.g. 10 seconds) update-manager will close after a successful authorization!

The updates are installing in the background. (You can see with top that aptd and dpkg are working.)

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: update-manager 1:0.165
ProcVersionSignature: Ubuntu 3.5.0-3.3-generic 3.5.0-rc5
Uname: Linux 3.5.0-3-generic i686
ApportVersion: 2.2.5-0ubuntu2
Architecture: i386
Date: Fri Jul 6 13:35:37 2012
EcryptfsInUse: Yes
GsettingsChanges:
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'launch-time' b'1341574336'
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'830'
 b'com.ubuntu.update-manager' b'window-width' b'1375'
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120629)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)