At first I thought this was just a damaged table, so I tried repairing via MySQL, but it appears there’s more fundamental issues.
Which of the duplicates should I remove, and any further advice in dealing with this issue?
[Fri Jun 07 01:51:17 2013] [error] [client 86.42.10.69] WordPress database error Duplicate entry 'cron' for key 'option_name' for query INSERT INTO `wp_options` (`option_name`, `option_value`, `autoload`) VALUES ('cron', 'a:2:{i:1370569877;a:1:{s:16:"wp_version_check";a:1:{s:32:"40cd750bba9870f18aada2478b24840a";a:3:{s:8:"schedule";s:10:"twicedaily";s:4:"args";a:0:{}s:8:"interval";i:43200;}}}s:7:"version";i:2;}', 'yes') ON DUPLICATE KEY UPDATE `option_name` = VALUES(`option_name`), `option_value` = VALUES(`option_value`), `autoload` = VALUES(`autoload`) made by require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('init'), call_user_func_array, wp_schedule_update_checks, wp_schedule_event, _set_cron_array, update_option, add_option, referer: http://www.example.com
[Fri Jun 07 01:51:17 2013] [error] [client 86.42.10.69] WordPress database error Table 'wp_options' is marked as crashed and should be repaired for query UPDATE `wp_options` SET `option_value` = 'a:2:{i:1370569877;a:2:{s:16:"wp_version_check";a:1:{s:32:"40cd750bba9870f18aada2478b24840a";a:3:{s:8:"schedule";s:10:"twicedaily";s:4:"args";a:0:{}s:8:"interval";i:43200;}}s:17:"wp_update_plugins";a:1:{s:32:"40cd750bba9870f18aada2478b24840a";a:3:{s:8:"schedule";s:10:"twicedaily";s:4:"args";a:0:{}s:8:"interval";i:43200;}}}s:7:"version";i:2;}' WHERE `option_name` = 'cron' made by require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('init'), call_user_func_array, wp_schedule_update_checks, wp_schedule_event, _set_cron_array, update_option, referer: http://www.example.com
