Akismet was updated to version 3.0.3, from version 3.0.2. Changelog:

• Fix for sending the wrong data to delete_comment action that could have prevented old spam comments from being deleted.
• Added a filter to disable logging of Akismet debugging information.
• Added a filter for the maximum comment age when deleting old spam comments.
• Added a filter for the number per batch when deleting old spam comments.
• Removed the “Check for Spam” button from the Spam folder.