broken sudo/gksudo from unity guest session

[Sasa Paporovic]

I am on Ubuntu12.04 64bit updated to 19.3.2012.

 In a unity 2D guest session a terminal is not accepting for gksudo the correct(proven!)passphrase for sudoer.

It is alway reproducible.

Also apport is affected of that (here for the option of adding the sudoer file).

Software center accept the sudoer phasphrase.

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This also affecting xorg. The screen whent black in background when the phasphrase box pops up. Only the box itself is visible.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: sudo 1.8.3p1-1ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
Uname: Linux 3.2.0-19-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Mon Mar 19 14:12:06 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120317)
ProcEnviron:
 TERM=xterm
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: sudo
UpgradeStatus: No upgrade log present (probably fresh install)