It only looks as if they've vanished. What's happened is part of our usability inititative for Blogware.

If an entry already has comments, you should see something like this at the end of that entry...
Comments: n  | Permanent Link
...where n is the number of comments. You'd click on the n to jump to a page that contains only the entry, and specifically the part of that page which lists the comments.

If an entry has no comments, all you'll see at the end of the entry is this:
Permanent Link
To make a comment, you need to go to the page for the entry itself. Click on either the Permanent Link at the end of the entry or the the icon that appears beside the entry's title to see the page for that entry. The page will contain the text of the entry, plus the usual fields for making a comment.

Do you like this change? Let us know in the comments!