I am using Akismet 2.5.5 and the config page shows all green, indicating it is working properly, but in the last few days I am suddenly getting increased amounts of spam.
I don't mean it's going to the spam folder - that's normal.
I'm talking about spam actually getting through. I have all comments set to be approved, so the crap is not getting on my blog, but it's annoying to get, for instance, 15 notifications of a new comment in the past seven hours, only to see that each is spam.
How are these getting through? Someone has figured out how to defeat Akismet? How do I defeat this spam?