启用APC扩展时抛出Zend_Session_Exception？

Question

有没有人知道为什么启用PHP APC扩展（我们使用的是PHP 5.3.26）会导致以下错误：

Fatal error: Uncaught exception 'Zend_Session_Exception' with message 'Zend_Session::start() - /library/Zend/Loader.php(Line:146):
Error #8 include_once() [<a href='function.include-once'>function.include-once</a>]:
  Inserting [/library/Zend/Form/Element/Textarea.php] Array' in /library/Zend/Session.php:497
Stack trace:
  #0 /library/Zend/Session/Namespace.php(143): Zend_Session::start(true)
  #1 /library/Zend/Auth/Storage/Session.php(87): Zend_Session_Namespace->__construct('Zend_Auth')
  #2 /library/Zend/Auth.php(91): Zend_Auth_Storage_Session->__construct()
  #3 /library/Zend/Auth.php(141): Zend_Auth->getStorage()
  #4 /library/Zend/Controller/Plugin in /library/Zend/Session.php on line 497

似乎是某种涉及session_start（）的错误，但我不明白APC会如何影响它。