software-properties-gtk crashed with UnicodeEncodeError in ToggleSourceUse(): 'ascii' codec can't encode characters in position 80-81: ordinal not in range(128)

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When I trying edit repro.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: software-properties-gtk 0.81.2
ProcVersionSignature: Ubuntu 3.0.0-7.8-generic 3.0.0
Uname: Linux 3.0.0-7-generic x86_64
Architecture: amd64
Date: Mon Jul 25 19:38:01 2011
ExecutablePath: /usr/bin/software-properties-gtk
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-properties-gtk --open-tab 2
ProcEnviron:
 PATH=(custom, no user)
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-properties-gtk', '--open-tab', '2']
SourcePackage: software-properties
Title: software-properties-gtk crashed with UnicodeEncodeError in ToggleSourceUse(): 'ascii' codec can't encode characters in position 80-81: ordinal not in range(128)
UpgradeStatus: Upgraded to oneiric on 2011-07-25 (0 days ago)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #831652, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.