[[!comment format=mdwn
 username="http://joey.kitenet.net/"
 nickname="joey"
 subject="comment 4"
 date="2010-07-04T18:16:26Z"
 content="""
What is the muse plugin that you have enabled? I am not familiar with it.

Apparently your ikiwiki is not seeing cgi parameters that should be passed to it. This appears to be some kind of web server misconfiguration, or possibly a broken ikiwiki wrapper or broken CGI.pm. 
"""]]