title: php serialize memory_limit issue
body: <p>my script, serializing a large array was working without problems on PHP 5.3.8 with APC. My server crashed I installed PHP 5.3.10 with APC and I get following error.</p>
  
  <pre>
  <code>
  Allowed memory size of 31457280 bytes exhausted (tried to allocate 262263 bytes).
  </code>
  </pre>
  
  <p>I increased memory_limit to 256M in php.ini. On same script I verified with PhpInfo() and it is showing 256 MB. However I get the same error message. I disabled APC, and same error message again. </p>