Software Center fails to run in certain locales (maverick)

[nucc1]

Binary package hint: software-center

My locale is en_NG, and it spews this error when launched from the terminal.

Traceback (most recent call last):
  File "/usr/bin/software-center", line 90, in <module>
    app = SoftwareCenterApp(datadir, xapian_base_path, options, args)
  File "/usr/share/software-center/softwarecenter/app.py", line 149, in __init__
    self.history = get_apt_history()
  File "/usr/share/software-center/softwarecenter/apt/apthistory.py", line 178, in get_apt_history
    apt_history = AptHistory()
  File "/usr/share/software-center/softwarecenter/apt/apthistory.py", line 83, in __init__
    self.rescan()
  File "/usr/share/software-center/softwarecenter/apt/apthistory.py", line 99, in rescan
    self._scan(self.history_file)
  File "/usr/share/software-center/softwarecenter/apt/apthistory.py", line 116, in _scan
    trans = Transaction(stanza)
  File "/usr/share/software-center/softwarecenter/apt/apthistory.py", line 59, in __init__
    "%Y-%m-%d %H:%M:%S")
  File "/usr/lib/python2.6/_strptime.py", line 270, in <module>
    _TimeRE_cache = TimeRE()
  File "/usr/lib/python2.6/_strptime.py", line 188, in __init__
    self.locale_time = LocaleTime()
  File "/usr/lib/python2.6/_strptime.py", line 70, in __init__
    self.lang = _getlang()
  File "/usr/lib/python2.6/_strptime.py", line 29, in _getlang
    return locale.getlocale(locale.LC_TIME)
  File "/usr/lib/python2.6/locale.py", line 497, in getlocale
    return _parse_localename(localename)
  File "/usr/lib/python2.6/locale.py", line 410, in _parse_localename
    raise ValueError, 'unknown locale: %s' % localename
ValueError: unknown locale: en_NG

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: software-center 3.0.4
ProcVersionSignature: Ubuntu 2.6.35-22.34-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
NonfreeKernelModules: vboxnetadp vboxnetflt vboxdrv
Architecture: i386
Date: Sun Oct 17 01:00:57 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate i386 (20100928)
PackageArchitecture: all
ProcEnviron:
 LANG=en_NG
 SHELL=/bin/bash
SourcePackage: software-center