comments deleted?

hey everyone.

I have made my comments all moderation because of my fear of spam. Just today after approving certain comments, I went back to my blog and saw that the comments have not shown up and when i go back to my dashboard, it’s as if those comments were never there.

I have not added unusual (or anythign for that matter) to my WP blog so i was wondering what could be the problem?

Thanks everyone!