It does nothing.
Now i have found some errors:
´[Mon Mar 17 12:35:39 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler Unknown table 'blcap_banlog' f\xc3\xbcr Abfrage DROP TABLE blcap_banlog von require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('plugins_loaded'), call_user_func_array, blcap_check_for_update, blcap_update_func, blcap_install, referer: http://www.hallo.com/wp-admin/update.php?action=update-selected&plugins=blue-captcha%2Fbluecaptcha.php&_wpnonce=de40d612ea
[Mon Mar 17 12:45:07 2014] [error] [client 195.170.90.78] Could not fetch free API key from Wordfence: We received an error response when trying to contact the Wordfence scanning servers. The HTTP status code was [0] and the curl error number was [7] and the error from CURL was: couldn't connect to host, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 12:45:07 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage INSERT INTO wp_options (option_name, option_value, autoload) VALUES ('wordfenceActivated', '1', 'yes') ON DUPLICATE KEY UPDATE option_name = VALUES(option_name), option_value = VALUES(option_value), autoload = VALUES(autoload) von activate_plugin, do_action('activate_wordfence/wordfence.php'), call_user_func_array, wordfence::installPlugin, update_option, add_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 12:45:07 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage UPDATE wp_options SET option_value = 'a:6:{i:0;s:49:\\"acurax-social-media-widget/acurax-social-icon.php\\";i:1;s:41:\\"better-wp-security/better-wp-security.php\\";i:2;s:28:\\"blue-captcha/bluecaptcha.php\\";i:3;s:23:\\"wordfence/wordfence.php\\";i:4;s:27:\\"wp-optimize/wp-optimize.php\\";i:5;s:43:\\"wp-updates-notifier/wp-updates-notifier.php\\";}' WHERE option_name = 'active_plugins' von activate_plugin, update_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 12:45:07 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage SELECT option_value FROM wp_options WHERE option_name = 'wf_plugin_act_error' LIMIT 1 von activate_plugin, do_action('activated_plugin'), call_user_func_array, wordfence_save_activation_error, update_option, get_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 12:45:07 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage INSERT INTO wp_options (option_name, option_value, autoload) VALUES ('wf_plugin_act_error', '', 'yes') ON DUPLICATE KEY UPDATE option_name = VALUES(option_name), option_value = VALUES(option_value), autoload = VALUES(autoload) von activate_plugin, do_action('activated_plugin'), call_user_func_array, wordfence_save_activation_error, update_option, add_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 12:46:36 2014] [error] [client 195.170.90.78] Could not fetch free API key from Wordfence: We received an error response when trying to contact the Wordfence scanning servers. The HTTP status code was [0] and the curl error number was [7] and the error from CURL was: couldn't connect to host, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 12:46:36 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage INSERT INTO wp_options (option_name, option_value, autoload) VALUES ('wordfenceActivated', '1', 'yes') ON DUPLICATE KEY UPDATE option_name = VALUES(option_name), option_value = VALUES(option_value), autoload = VALUES(autoload) von activate_plugin, do_action('activate_wordfence/wordfence.php'), call_user_func_array, wordfence::installPlugin, update_option, add_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 12:46:36 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage UPDATE wp_options SET option_value = 'a:6:{i:0;s:49:\\"acurax-social-media-widget/acurax-social-icon.php\\";i:1;s:41:\\"better-wp-security/better-wp-security.php\\";i:2;s:28:\\"blue-captcha/bluecaptcha.php\\";i:3;s:23:\\"wordfence/wordfence.php\\";i:4;s:27:\\"wp-optimize/wp-optimize.php\\";i:5;s:43:\\"wp-updates-notifier/wp-updates-notifier.php\\";}' WHERE option_name = 'active_plugins' von activate_plugin, update_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 12:46:36 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage SELECT option_value FROM wp_options WHERE option_name = 'wf_plugin_act_error' LIMIT 1 von activate_plugin, do_action('activated_plugin'), call_user_func_array, wordfence_save_activation_error, update_option, get_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 12:46:36 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage INSERT INTO wp_options (option_name, option_value, autoload) VALUES ('wf_plugin_act_error', '', 'yes') ON DUPLICATE KEY UPDATE option_name = VALUES(option_name), option_value = VALUES(option_value), autoload = VALUES(autoload) von activate_plugin, do_action('activated_plugin'), call_user_func_array, wordfence_save_activation_error, update_option, add_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 13:01:54 2014] [error] [client 195.170.90.78] Could not fetch free API key from Wordfence: We received an error response when trying to contact the Wordfence scanning servers. The HTTP status code was [0] and the curl error number was [7] and the error from CURL was: couldn't connect to host, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 13:01:54 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage INSERT INTO wp_options (option_name, option_value, autoload) VALUES ('wordfenceActivated', '1', 'yes') ON DUPLICATE KEY UPDATE option_name = VALUES(option_name), option_value = VALUES(option_value), autoload = VALUES(autoload) von activate_plugin, do_action('activate_wordfence/wordfence.php'), call_user_func_array, wordfence::installPlugin, update_option, add_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 13:01:54 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage UPDATE wp_options SET option_value = 'a:6:{i:0;s:49:\\"acurax-social-media-widget/acurax-social-icon.php\\";i:1;s:41:\\"better-wp-security/better-wp-security.php\\";i:2;s:28:\\"blue-captcha/bluecaptcha.php\\";i:3;s:23:\\"wordfence/wordfence.php\\";i:4;s:27:\\"wp-optimize/wp-optimize.php\\";i:5;s:43:\\"wp-updates-notifier/wp-updates-notifier.php\\";}' WHERE option_name = 'active_plugins' von activate_plugin, update_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 13:01:54 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage SELECT option_value FROM wp_options WHERE option_name = 'wf_plugin_act_error' LIMIT 1 von activate_plugin, do_action('activated_plugin'), call_user_func_array, wordfence_save_activation_error, update_option, get_option, referer: http://www.hallo.com/wp-admin/plugins.php
[Mon Mar 17 13:01:54 2014] [error] [client 195.170.90.78] WordPress-Datenbank-Fehler MySQL server has gone away f\xc3\xbcr Abfrage INSERT INTO wp_options (option_name, option_value, autoload) VALUES ('wf_plugin_act_error', '', 'yes') ON DUPLICATE KEY UPDATE option_name = VALUES(option_name), option_value = VALUES(option_value), autoload = VALUES(autoload) von activate_plugin, do_action('activated_plugin'), call_user_func_array, wordfence_save_activation_error, update_option, add_option, referer: http://www.hallo.com/wp-admin/plugins.php`