More trackback problems

I saw that “life – listed chronologically” sent a trackback ping to Rayne’s latest post but it doesn’t show up on the archive page. My theory is that the page is not being rebuilt automatically as it is when comments are posted. To check this, I will rebuild the page manually. If the trackback appears, that will confirm my diagnosis of the problem. If not, then I’ll have to keep digging.
If I’m right, does anyone know how to wire things up so that incoming trackback pings automatically rebuild the relevant archive pages? I’m not sure if they currently rebuild the index page, or if that page just gets regenerated so often that they tend to show up there fairly soon.