WP says “no comments” while displaying comments

do you have spam karma installed? If so see this:
https://www.ads-software.com/support/topic/53921?replies=7

I do, and just like the person who started that thread, I upgraded to 2.1 but saw no changes. I also noticed that entries that preceded the upgrade display the number of comments that existed at the time of the upgrade.

yes, but did you get the compatibility plugin for Spam Karma, too? You need that to get the comments counted again.

I take that back – it DID fix the problem, it just didn’t show up until the next comment was posted.

oh good! Happy blogging!