I have already addressed reports on Maltese Wikipedia namespaces by bug #16373 and bug #14898. Almost all of mt.wp namespaces were translated correctly, except that of "Wikipedia talk:" namespace. It should be "Diskussjoni Wikipedija:" and not the inverse (ie. "Wikipedija diskussjoni:").
For the Maltese Wiktionary, accessed on http://mt.wiktionary.org/ there is the need for a namespace translation. This is "Wiktionary talk:" and "Wiktionary". These should be translated correctly to "Diskussjoni Wikizzjunarju:" (for "Wiktionary talk:") and "Wikizzjunarju:" (for "Wiktionary:").