This looks completely garbled today: http://stable.toolserver.org/geohack/geohack.php?language=sv%C2%B6ms=59_23_N...
It looks broken, both in Firefox 2.0 and lynx 2.8.6 on Linux.
But if you change to language=de or some other language, all is fine. The sv:Template:GeoTemplate has not changed.
It's a little weird that <h1...>Map sources/GeoHack</h1> is followed by <html ><head>...</head><body> (after which the garble begins) but this is actually the case with the standard GeoHack page.