Last modified: 2012-03-19 15:02:18 UTC
https://svn.wikimedia.org/viewvc/mediawiki/branches/wmf/1.17wmf1/extensions/ArticleFeedback/ArticleFeedback.i18n.php?view=markup#l31 has a typo: "occured" instead of "occurred". It is visible on all production WMF wikis whenever an error occurs. You know what to do...
There was also 3 occurrences (hah!) of it spelt wrong in AFTv5 too Both fixed in r114141
Lol, and more variants in r114141, r114142, r114144