Version 4.2.5 of the Akismet plugin for WordPress is now available. This update contains the following improvements:
- A fixed for a bug that added unnecessary comment history entries after comment rechecks.
- Akismet now displays a notice when WP-Cron is disabled and might be affecting comment rechecks.
To upgrade, visit the Updates page of your WordPress dashboard and follow the instructions. If you need to download the plugin zip file directly, links to all versions are available in the WordPress plugins directory.
Akismet 
Does Akismet work on Spanish blogs?