Approval for comments not working

All of a sudden (isn’t that how it goes…) the requirement to approve all comments is not working. In Options –> Discussion I have the following checked:

* Attempt to notify any Weblogs linked to from the article (slows down posting.)
* Allow link notifications from other Weblogs (pingbacks and trackbacks.)
* Allow people to post comments on the article

E-mail me whenever:

* Anyone posts a comment
* A comment is held for moderation

Before a comment appears:

* An administrator must approve the comment (regardless of any matches below)
* Comment author must fill out name and e-mail
* Comment author must have a previously approved comment

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And, I’ve added simple words to the comment moderation section in hopes it would block auto posting of the comments.

But the comments still automatically go up.

Any ideas out there?

Thanks,
K