I thought I was having problems with Akismet letting spam through on my blog, but after further investigation it appears that it did indeed catch it but somehow I still received an email to moderate them.

Weird.

A quick check on Technorati shows plenty of blog entries reporting problems.

UPDATE

Looks like the problem has been identified and fixed. Great job by the Akismet team for quick work and especially for going around to several blogs that posted about it and actually commenting on the blogs. Impressive.