Found this interesting backtrace in our error log. The trace looks sane until it hits #2 ../MessageBlobStore.php(311): wfMsgExt(17, Array)

[30-Dec-2010 21:33:36] /w/i.php?title=Special:Nuke&action=delete: Exception: Non-string key given
#0 /www/w/includes/GlobalFunctions.php(751): MessageCache->get(17, true, Object(Language))
#1 /www/w/includes/GlobalFunctions.php(872): wfMsgGetKey(17, true, Object(Language), false)
#2 /www/w/includes/MessageBlobStore.php(311): wfMsgExt(17, Array)
#3 /www/w/includes/MessageBlobStore.php(294): MessageBlobStore::reencodeBlob('{"collapsible-e...', 17, 'af')
#4 /www/w/includes/MessageBlobStore.php(211): MessageBlobStore::getUpdatesForMessage(17, Array)
#5 /www/w/includes/MessageCache.php(461): MessageBlobStore::updateMessage('collapsible-col...')
#6 /www/w/includes/Article.php(4119): MessageCache->replace('Collapsible-col...', false)
#7 /www/w/includes/Article.php(3286): Article::onArticleDelete(Object(Title))
#8 /www/w/includes/Article.php(3123): Article->doDeleteArticle('Mass deletion o...', false, 1781209)
#9 /www/w/extensions/Nuke/Nuke_body.php(190): Article->doDelete('Mass deletion o...')
#10 /www/w/extensions/Nuke/Nuke_body.php(37): SpecialNuke->doDelete(Array, 'Mass deletion o...')
#11 /www/w/includes/SpecialPage.php(587): SpecialNuke->execute(NULL)
#12 /www/w/includes/Wiki.php(245): SpecialPage::executePath(Object(Title))
#13 /www/w/includes/Wiki.php(63): MediaWiki->handleSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#14 /www/w/index.php(104): MediaWiki->performRequestForTitle(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))
#15 {main}

Version: 1.18.x
Severity: normal