I had 13, 13!!!!, valid comments in my "junk comments" category. Movable Type 3.2 changed the comment preview process and I never knew I needed to check the possible junk comments. Usually comments are e-mailed to me so I can approve them but the suspected junk comments aren't e-mailed.
So, be sure to check your "Junk Comments" section if you use MT 3.2. People may actually be commenting on your blog, never seeing your comments, and never ever ever commenting again (Please, I've learned my lesson. I love comments and please leave some). Sorry!
There were 13 comments and all 13 were not junk. Why MT thought one comment was junk and the other was not, given the same commentor, I don't know. Some of that delicious spamranking algorithm, I guess.