I’m afraid you’re in teh wrong forums. You need to be over at http://wordpress.org as we’re running different software than you are and our answers would be different. We’re running WordPress Multiuser.
But, to answer you question, I’m not sure you’re asking a question. Akismet is catching your spam but you have more coming in comparied to earlier. Sounds like Akismet is working and doing what’s its suppose to be doing. You can actually see a stats page for Akismet here if you’re interested.