I've made some progress with this. I found a setting in the advanced config which was supposed to turn on logging in XML-RPC, this didn't seem to give any more useful information than what I already had. I then just hacked the script to write out the HTTP post data to a file and looked at what Delicious was sending, this is where the problem is, the last parameter:

<param><value><int>1</int></value></param>

According to [url=http://www.sixapart.com/developers/xmlrpc/metaweblog_api/metaweblognewpost.html]this spec[/url] b2evo is doing the right thing in _metaweblog.api.php:

$mwnewpost_sig =  array(array($xmlrpcString,$xmlrpcString,$xmlrpcString,$xmlrpcString,$xmlrpcStruct,$xmlrpcBoolean));

But I expect if I change it to this Delicious will work just fine:

$mwnewpost_sig =  array(array($xmlrpcString,$xmlrpcString,$xmlrpcString,$xmlrpcString,$xmlrpcStruct,$xmlrpcInt));

Not sure if it's worth it - I presume it'll stop working with everything else if I make the change, on the other hand this is the only thing I want to use for at present...

Rob

Thanks for your effort! Well, since this seems to be a Delicious.com bug, somebody should inform them. :-)

our xmlrpc is updated to the latest version?