A page with many style sheets (from geshi, but that looks unrelated) gets a script error in IE8.
A simple debugging shows a error in private function addLink of the mw.loader at the line el.href=url;
When visiting [[List of Hello world program examples]] with IE8 he gives me (for a german installation):
Details zum Fehler auf der Webseite
Benutzer-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C)
Zeitstempel: Sun, 14 Apr 2013 19:10:55 UTC
Meldung: Script error
Zeile: 0
Zeichen: 0
Code: 0
URI: https://bits.wikimedia.org/en.wikipedia.org/load.php?debug=false&lang=de&modules=jquery%2Cmediawiki%2CSpinner%7Cjquery.triggerQueueCallback%2CloadingSpinner%2CmwEmbedUtil%7Cmw.MwEmbedSupport&only=scripts&skin=monobook&version=20130401T172113Z
Meldung: Script error
Zeile: 0
Zeichen: 0
Code: 0
URI: https://bits.wikimedia.org/en.wikipedia.org/load.php?debug=false&lang=de&modules=jquery%2Cmediawiki%2CSpinner%7Cjquery.triggerQueueCallback%2CloadingSpinner%2CmwEmbedUtil%7Cmw.MwEmbedSupport&only=scripts&skin=monobook&version=20130401T172113Z
Meldung: Script error
Zeile: 0
Zeichen: 0
Code: 0
URI: https://bits.wikimedia.org/en.wikipedia.org/load.php?debug=false&lang=de&modules=jquery%2Cmediawiki%2CSpinner%7Cjquery.triggerQueueCallback%2CloadingSpinner%2CmwEmbedUtil%7Cmw.MwEmbedSupport&only=scripts&skin=monobook&version=20130401T172113Z
Version: 1.22.0
Severity: normal