Was looking at the page source for an article today, specifically [[:en:K-152 Nerpa]], and noticed the following at the top:
<link rel="alternate" type="application/x-wiki" title="Edit this page" href="http://en.wikipedia.org/w/index.php?title=K-152_Nerpa&action=edit" />
<link rel="edit" title="Edit this page" href="http://en.wikipedia.org/w/index.php?title=K-152_Nerpa&action=edit" />
<link rel="alternate" type="application/x-wiki" title="Edit this page" href="http://en.wikipedia.org/w/index.php?title=K-152_Nerpa&action=edit" />
The top and bottom link entries seem to be identical and thus included twice.
MediaWiki 1.14alpha (r42593)
PHP 5.2.4-2ubuntu5wm1 (apache2handler)
MySQL 4.0.26-wikimedia-google-20071113-log
Version: unspecified
Severity: enhancement