Description of problem:
I have my system set to Czech language. If I try to do yum grouplist, I am missing a lot of items.

Version-Release number of selected component (if applicable):
yum-3.2.23-3.fc11.noarch

How reproducible:
always

Steps to Reproduce:
1. LANG="cs_CZ.UTF-8" yum grouplist
2. LANG="C" yum grouplist
3. compare the list of groups ... for example KDE is missing in the first list
  
Actual results:
# LANG="cs_CZ.UTF-8" yum grouplist
Setting up Group Process
Installed Groups:
   Podpora hardware
Available Groups:
   Amazigh Support
   Azerbaijani Support
   Chichewa Support
   Coptic Support
   Editory
   Electronic Lab
   Esperanto podpora
   FTP server
   Fedora Eclipse
   Fijian Support
   Font design and packaging
   Frisian Support
   Friulian Support
   Grafika
   Hiligaynon Support
   Interlingua Support
   Java
   Kazakh Support
   Kinyarwanda Support
   Konkani podpora
   Kurdish Support
   LXDE
   Latin Support
   Luxembourgish Support
   Maithili podpora
   Malagasy Support
   Maltese Support
   Manx Support
   Metody vstupu
   MinGW cross-compiler
   OCaml
   Occitan Support
   Perl Development
   Podpora Inuktikut
   Podpora Marathi
   Podpora low saxon
   Podpora oriya
   Podpora sinhala
   Podpora swati
   Podpora tagalog
   Podpora telugu
   Podpora tisku
   Podpora tonga
   Podpora tsonga
   Podpora tswana
   Podpora urdu
   Podpora venda
   Podpora xhosa
   Ruby
   Sanskrit Support
   Sardinian Support
   Sindhi podpora
   Sugar Desktop Environment
   Swahili Support
   Tetum Support
   Turkmen Support
   Upper Sorbian Support
   Virtualizace
   Web server
   XFCE
   Zvuk a video
Done


# LANG="C" yum grouplist
Setting up Group Process
Installed Groups:
   Administration Tools
   Hardware Support
   Legacy Fonts
   Mail Server
   Network Servers
   System Tools
Available Groups:
   Afrikaans Support
   Albanian Support
   Amazigh Support
   Arabic Support
   Armenian Support
   Assamese Support
   Authoring and Publishing
   Azerbaijani Support
   Base
   Basque Support
   Belarusian Support
   Bengali Support
   Bhutanese Support
   Bosnian Support
   Brazilian Portuguese Support
   Breton Support
   Bulgarian Support
   Catalan Support
   Chichewa Support
   Chinese Support
   Clustering
   Coptic Support
   Croatian Support
   Czech Support
   DNS Name Server
   Danish Support
   Development Libraries
   Development Tools
   Dial-up Networking Support
   Dutch Support
   Editors
   Educational Software
   Electronic Lab
   Engineering and Scientific
   English (UK) Support
   Esperanto Support
   Estonian Support
   Ethiopic Support
   FTP Server
   Faeroese Support
   Fedora Eclipse
   Fedora Packager
   Fijian Support
   Filipino Support
   Finnish Support
   Font design and packaging
   Fonts
   French Support
   Frisian Support
   Friulian Support
   GNOME Desktop Environment
   GNOME Software Development
   Gaelic Support
   Galician Support
   Games and Entertainment
   Georgian Support
   German Support
   Graphical Internet
   Graphics
   Greek Support
   Gujarati Support
   Haskell Development
   Hebrew Support
   Hiligaynon Support
   Hindi Support
   Hungarian Support
   Icelandic Support
   Indonesian Support
   Input Methods
   Interlingua Support
   Inuktitut Support
   Irish Support
   Italian Support
   Japanese Support
   Java
   Java Development
   KDE (K Desktop Environment)
   KDE Software Development
   Kannada Support
   Kashmiri Support
   Kashubian Support
   Kazakh Support
   Khmer Support
   Kinyarwanda Support
   Konkani Support
   Korean Support
   Kurdish Support
   LXDE
   Lao Support
   Latin Support
   Latvian Support
   Legacy Network Server
   Legacy Software Development
   Lithuanian Support
   Low Saxon Support
   Luxembourgish Support
   Macedonian Support
   Maithili Support
   Malagasy Support
   Malay Support
   Malayalam Support
   Maltese Support
   Manx Support
   Maori Support
   Marathi Support
   MinGW cross-compiler
   Mongolian Support
   MySQL Database
   Myanmar (Burmese) Support
   Nepali Support
   News Server
   Northern Sotho Support
   Norwegian Support
   OCaml
   Occitan Support
   Office/Productivity
   Oriya Support
   Perl Development
   Persian Support
   Polish Support
   Portuguese Support
   PostgreSQL Database
   Printing Support
   Punjabi Support
   Romanian Support
   Ruby
   Russian Support
   Samoan Support
   Sanskrit Support
   Sardinian Support
   Serbian Support
   Server Configuration Tools
   Sindhi Support
   Sinhala Support
   Slovak Support
   Slovenian Support
   Somali Support
   Sound and Video
   Southern Ndebele Support
   Southern Sotho Support
   Spanish Support
   Sugar Desktop Environment
   Swahili Support
   Swati Support
   Swedish Support
   Tagalog Support
   Tajik Support
   Tamil Support
   Telugu Support
   Tetum Support
   Text-based Internet
   Thai Support
   Tibetan Support
   Tonga Support
   Tsonga Support
   Tswana Support
   Turkish Support
   Turkmen Support
   Ukrainian Support
   Upper Sorbian Support
   Urdu Support
   Uzbek Support
   Venda Support
   Vietnamese Support
   Virtualization
   Walloon Support
   Web Development
   Web Server
   Welsh Support
   Window Managers
   Windows File Server
   X Software Development
   X Window System
   XFCE
   XFCE Software Development
   Xhosa Support
   Zulu Support
Done


Expected results:
both lists contain the same groups

Additional info: