Add me to the list of people using WordPress 1.2.1 for whom the Trackback feature fails. I was surprised since it worked with an earlier version, so I <u>assumed</u> that it worked with the current stable version of WordPress until it was demonstrated to me that it was a problem at my end, rather than at the other end to which I was tracking back.
IMHO, this is a loss of important weblog functionality. I wonder how it could have been lost during version changes?