The authentication dialog for update-manager, synaptic...etc is too wide, accommodating approximately 120 characters. See the attached screen-shot. However executing "gksu gedit" brings up a smaller authentication window, of more appropriate length. I've discovered that there are other extra wide dialog windows displaying messages. This is most likely because they have to accommodate the text they're displaying. It's looks more like a matter of formatting the text in some dialog boxes. Not sure that gksu should be the affected package here.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gksu 2.0.2-6ubuntu1
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: Sat Mar 17 18:49:43 2012
ProcEnviron:
LANGUAGE=en_CA:en
TERM=xterm
LANG=en_CA.UTF-8
SHELL=/bin/bash
SourcePackage: gksu
UpgradeStatus: Upgraded to precise on 2012-03-11 (6 days ago)
Could you please upload a picture of what the (correct) dialog looks like, from a previous release, for comparison.