disabling eaccelerator in .htaccess lets D7 work
php_flag eaccelerator.enable 0
php_flag eaccelerator.optimizer 0
otherwise, we get the error:
PHP Fatal error: Class 'FieldException' not found
Thanks to axper and Darko Hrgovic
Original Post:
http://www.agentic.ca/blog/20100119/drupal_7_eaccelerator_issues