I tried enabling the openid plugin on my site. I tried to log in but got an 
error when coming back to ikiwiki.cgi: "Error: unknown do parameter". I think
this means that do=postsignin isn't handled by CGI.pm. 

The URI in question is fairly long, but if you want me to add it here, I can do that.

I didn't really know how to debug this so I grepped for "postsignin" in both 
openid.pm and passwordauth.pm and found:

    IkiWiki/Plugin/openid.pm:               return_to => IkiWiki::cgiurl(do => "postsignin"),
    IkiWiki/Plugin/passwordauth.pm:                         IkiWiki::cgi_postsignin($cgi, $session);

Am I barking up the wrong tree? Maybe I'm missing something obvious? 

I'm running 1.38 of ikiwiki and the newest CGI::Session, Net::OpenID::Consumer, 
Crypt::DH, URI-Fetch. --Ethan

> The url must not have a setting for openid.mode or openid_identifier in
> it. So the OpenId plugin didn't know that it was trying to log in. I
> think this points to an issue with the OpenID server. --[[Joey]]

>> I put debugging output in openid.pm and it suggests that the 
>> verification is taking place successfully. I see "openid.mode=id_res" 
>> in the URI. On top of that, it's the same Openid server I use
>> to sign in here on ikiwiki.kitenet.net. --Ethan