I have a wiki in Swedish, and we have a lot of letters that you might find strange. Räksmörgås is a nice word in Swedish for example.
Anyway, the RSS feed generated can be invalid due to our strange letters - especially since the "description" will be shortened and when one of our letters are the last being cut.
is a feed from my wiki (saved it locally so that you can see the error before it disappears)
The feed validator results are at http://feedvalidator.org/check.cgi?url=http%3A%2F%2Fharkonnen.boivie.com%2F%7Evictor%2Fdokuwiki_feed.xml