After upgrading to WordPress 2.7, for some reason, comments are now held for approval before being posted.
I looks like it only affects comments from people that have not commented before.
I’ve tried checking my settings under SETTINGS >> DISCUSSION:
Under “Before a comment appears”
I have NOT checked “Before a comment appears An administrator must always approve the comment”
I have NOT checked “Comment author must have a previously approved comment”
I HAVE checked “Comment author must fill out name and e-mail”
But I have NOT checked “Users must be registered and logged in to comment”
My WordPress.com API Key is VALID.
The comments does NOT contain links or anything other than text.
I did not have the same problem, before upgrading to WordPress 2.7, and to the best of my knowledge, I have not changed ANY settings in Akismet (but, as you can see, I’ve checked the settings none the less).