Comments not showing in edit mode

Hi !

I’ve got a weird thing going on on my blog running 3.0b2 (and currently in development): comments don’t show when I edit an article.

Some precisions : I can add comments on the article page (when browsing on the site, not in admin mode), I can see them in the comments menu in admin mode, but they don’t appear when I edit one article, all I see is a link to “Show comments” next to a spinning wheel, when I click on it it says that tere’s no comments (even if there is).

I’ve developed my own theme, using some parts of twentyten to build it, and the “fun” part is that, when I go back to the default theme, the comments come back !

There must be something I forgot to add to my theme, but what ?

Thanks ??