Hi,
There was a problem with upgrading pl.wiktionary to 1.3 -- two namespaces (NS_WIKIPEDIA & NS_WIKIPEDIA_TALK) have been overwritten and some parts of the wiktionary are inaccessible now.
I've put the updated $wgNamespaceNamesPl at http://pl.wiktionary.org/wiki/Wikipedysta:Tsca/LanguageWiktionaryPL.php-upda...
--please update the language file. Thank you.