apport-gtk crashed with UnicodeEncodeError in ui_present_crash(): 'ascii' codec can't encode characters in position 19-20: ordinal not in range(128)

[Sílvio A. Barth]

Binary package hint: apport

I updated and rebooted the system, and the error message appeared.
Only this.
Do not even know what problem it is.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: apport-gtk 1.20-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
ApportLog:
 ERROR: apport (pid 18452) Sat Mar 26 11:20:38 2011: called for pid 1239, signal 11
 ERROR: apport (pid 18452) Sat Mar 26 11:20:38 2011: executable: /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1 (command line "/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1")
 ERROR: apport (pid 18452) Sat Mar 26 11:20:42 2011: wrote report /var/crash/_usr_lib_policykit-1-gnome_polkit-gnome-authentication-agent-1.1000.crash
Architecture: i386
CrashReports:
 600:1000:1000:27122:2011-03-26 11:22:57.863698000 -0300:2011-03-26 11:23:02.245389072 -0300:/var/crash/_usr_share_apport_apport-gtk.1000.crash
 600:1000:1000:1167995:2011-03-26 11:20:41.008314000 -0300:2011-03-26 11:22:57.070803068 -0300:/var/crash/_usr_lib_policykit-1-gnome_polkit-gnome-authentication-agent-1.1000.crash
Date: Sat Mar 26 11:22:58 2011
ExecutablePath: /usr/share/apport/apport-gtk
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python /usr/share/apport/apport-gtk
ProcEnviron:
 LANGUAGE=pt_BR:en
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/share/apport/apport-gtk']
SourcePackage: apport
Title: apport-gtk crashed with UnicodeEncodeError in ui_present_crash(): 'ascii' codec can't encode characters in position 19-20: ordinal not in range(128)
UpgradeStatus: Upgraded to natty on 2011-03-25 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[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 #737799, 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.