Now this become more frequent to have two release in just few days of PHP 5 ! A critical bug with $_POST array handling as well as the FastCGI sapi have been discovered in PHP 5.1.3. A new PHP release 5.1.4 is now available to address these issues. All PHP users are encouraged to upgrade to this release as soon as possible. for more details http://www.php.net/release_5_1_4.php.
First I thought there was a problem in the RSS, because the new release came just 3 days after releasing PHP 5.1.3 ! Well, now should we upgrade or wait for another possible release in the next week ? The bug seems to be fixed with the new release, but as we have talked about before this is one of the negative points that make PHP5 adoption very slow in the community.