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ISSUE NO. 2: Interlanguage Links do not get displayed, no matter if the skin is MonoBook or Classic. After you enter [[de:PageName]], for example, this gets displayed in the body of the wiki webpage and not in a special "In other languages" section.
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Well, you might wanna take a look at http://meta.wikimedia.org/wiki/Help:Interwiki_links The page thoroughly explains what you should do to enable interwiki links.
Filip