Did you set max_execution_time at at least 120 ? Have a look at http://ez.no/developer/forum/install_configuration/fatal_error_maximum_execution_time_of_30_seconds
Fatal error: Call to a member function on a non-object in /site_path/kernel/classes/datatypes/ezuser/ezuser.php on line 737 Fatal error: eZ publish did not finish its request
The execution of eZ publish was abruptly ended, the debug output is present below.