Ever since I upgraded to 2.9.1 (at least that’s when I think the problem started) every comment being made on my site automatically goes to “Spam”. I turned off “hold comments for moderation” but everything still goes to spam! The only way I can stop this from happening is to turn off Akismet, which seems to fix the problem.
I saw an older post from about 4 months ago that says there is a bug in reCAPTCHA that could cause this, but reCAPTCHA has been working fine for me this whole time.
I’ve never had an issue with akismet but I’ve never tried it in tandem with recaptcha – spammers can just type in those words too. Maybe try it the other way around… disabling recaptcha for a bit and see if akismet plays nice.