Got an issue on a site where deleting a comment with replies (where threaded commenting is activated), leads to the child comments being orphaned, causing unexpected behaviour (such as the orphaned comments attaching themselves to the latest comment).
I haven't looked into this yet, but before I do, is this a known problem with threaded comments, or a theme specific problem?
I'm thinking of hooking into whatever the hook is for deleting comments to not actually delete the comment, but replace it with something like [deleted] - good idea, or not?