Where are the different messages coming from?
I tried it with a few other languages, and none of the others changed after loading..
Re: "12 hours ago". At lvwiki, when page is loading, it shows "pirms 12 stundām", which is completely OK. When the page is loaded, it shows "12 stundas agrāk" (not so OK). But I can't find the corresponding Mediawiki message (using uselang=qqx).