В последнее время сайты стали плохо работать при этом браузер пишит следующие " Услуга временно недоступна
Сервер временно не в состоянии обслуживать ваш запрос из-за простоя обслуживания или проблемы пропускной способности. Пожалуйста, повторите попытку позже."

При чем в cPanel в журнале ошибок пишется следующие

[Sun Nov 10 22:49:27 2013] [warn] [client 46.39.36.22] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:49:24 2013] [warn] [client 85.115.248.48] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:49:04 2013] [warn] [client 83.220.236.203] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:49:03 2013] [warn] [client 176.222.196.126] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:48:59 2013] [warn] [client 82.145.222.147] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:48:43 2013] [warn] [client 37.113.156.206] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:48:41 2013] [warn] [client 157.55.33.42] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:48:40 2013] [warn] [client 188.187.46.208] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:48:40 2013] [warn] [client 85.192.59.250] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:47:54 2013] [warn] [client 82.145.222.153] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:47:54 2013] [warn] [client 178.45.18.48] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:47:53 2013] [warn] [client 46.249.22.137] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:47:52 2013] [warn] [client 213.87.143.38] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:47:52 2013] [warn] [client 82.114.231.47] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:47:52 2013] [warn] [client 95.108.214.13] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:46:58 2013] [warn] [client 128.69.101.206] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:46:58 2013] [warn] [client 31.210.200.66] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:46:55 2013] [warn] [client 128.71.152.194] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:46:54 2013] [warn] [client 91.238.169.171] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:46:53 2013] [warn] [client 188.190.139.102] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php
[Sun Nov 10 22:46:48 2013] [warn] [client 95.108.233.70] mod_fcgid: can't apply process slot for /var/www/u2209593/php-bin/php

В чем может быть дело???