[Fedora TeX Live] hyphenation in texlive 2011?

[pip]

Dear all, 
I can't get hyphenation working in any language I tried on my installation of texlive 2011 under Fedora 16. I'm not sure if it worked before, as I wasn't paying too much attention (esp. to the compilation log). 
 
I need croatian hyphenation rules, but those seem not to exist in texlive-collection-langcroatian. Therefore I tried ngerman. And the result was: 
 
Package babel Warning: No hyphenation patterns were loaded for the language `ngerman' 
 
 
The file /usr/share/texlive/texmf/tex/generic/config/language.dat says 
german-x-2011-07-01 dehypht-x-2011-07-01.tex 
=german-x-latest 
ngerman-x-2011-07-01 dehyphn-x-2011-07-01.tex 
=ngerman-x-latest 
 
and I don't see how this translates to using language option "ngerman", the way it does for english=usenglish=USenglish=american. 
 
 
Two questions: why isn't ngerman working, and where are the hyph rules for croatian. 
 
Regards, 
Pip