Here is a snapshot of the display captcha and the value entered:

As you can see, i have entered the proper captcha. When i click submit, it however fails and says the captcha doesn't match. Here is the reason logged in the database: Invalid captcha (Entered: HMQ, Expected: HQV).
Any suggestions? The odd thing is that other blog's use this same plugin (it installed in the shared source folder) and it works just fine there. I'm stumped for the time being. Thanks!