После установки/удаления пакетов не стартует apache2

Добрый день.
Имеется старая виртуальная машина bitrix, с ОС Ubuntu (версия, вроде, 8, ядро 2.6.24-24-generic), в ней долгое время работал сайт, все было в порядке.
Сегодня установил пакет php5-pgsql, при установке благополучно была удалена часть пакетов и сайт работать перестал, показывал белый экран. Я удалил php5-pgsql и все что он потянул за собой и, вроде бы, обратно поставил все то, что было удалено. Но теперь я наблюдаю новую ошибку: "Service is temporarily unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later."
Судя по всему не стартует apache2, открыл лог: cat /var/log/apache2/error.log
В логе следующее:
[ 20.05.2015 12:46:51 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_ConfigurationChangedEvent042110­172915 : Permission denied
PHP Warning:  Failed to read zend.ini file [/usr/local/zend/etc/conf.d/sc.ini], No such file or directory in Unknown on line 0
PHP Warning:  Failed to read zend.ini file [/usr/local/zend/etc/conf.d/sc.ini], No such file or directory in Unknown on line 0
PHP Warning:  Failed to read ini file [/usr/local/zend/etc/conf.d/sc.ini], No such file or directory in Unknown on line 0
[20.05.2015 12:46:51 ERROR] Fatal error: failed to allocate semaphore monitor_rqst_stat.sem
[20.05.2015 12:46:51 ERROR] Failed to open mmap file monitor_ZMRequestsStatContainerSHM with size 4194304 : No such file or directory
PHP Warning:  Failed to read ini file [/usr/local/zend/etc/conf.d/sc.ini], No such file or directory in Unknown on line 0
[ 20.05.2015 12:46:51 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:46:51 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[Wed May 20 12:46:51 2015] [error] (13)Permission denied: could not create /var/run/apache2.pid
[Wed May 20 12:46:51 2015] [error] apache2: could not log pid to file /var/run/apache2.pid
[ 20.05.2015 12:46:57 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_ConfigurationChangedEvent042110­172915 : Permission denied
[Wed May 20 12:46:57 2015] [error] (13)Permission denied: could not create /var/run/apache2.pid
[Wed May 20 12:46:57 2015] [error] apache2: could not log pid to file /var/run/apache2.pid
[ 20.05.2015 12:46:58 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:46:58 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:47:00 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_ConfigurationChangedEvent042110­172915 : Permission denied
[ 20.05.2015 12:47:00 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:47:00 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[Wed May 20 12:47:00 2015] [error] (13)Permission denied: could not create /var/run/apache2.pid
[Wed May 20 12:47:00 2015] [error] apache2: could not log pid to file /var/run/apache2.pid
[ 20.05.2015 12:48:05 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_ConfigurationChangedEvent042110­172915 : Permission denied
[ 20.05.2015 12:48:06 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:48:06 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[Wed May 20 12:48:06 2015] [error] (13)Permission denied: could not create /var/run/apache2.pid
[Wed May 20 12:48:06 2015] [error] apache2: could not log pid to file /var/run/apache2.pid
[ 20.05.2015 12:48:08 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_ConfigurationChangedEvent042110­172915 : Permission denied
[Wed May 20 12:48:08 2015] [error] (13)Permission denied: could not create /var/run/apache2.pid
[Wed May 20 12:48:08 2015] [error] apache2: could not log pid to file /var/run/apache2.pid
[ 20.05.2015 12:48:08 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:48:08 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:48:10 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_ConfigurationChangedEvent042110­172915 : Permission denied
[Wed May 20 12:48:10 2015] [error] (13)Permission denied: could not create /var/run/apache2.pid
[Wed May 20 12:48:10 2015] [error] apache2: could not log pid to file /var/run/apache2.pid
[ 20.05.2015 12:48:10 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:48:10 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:48:52 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_ConfigurationChangedEvent042110­172915 : Permission denied
[Wed May 20 12:48:52 2015] [error] (13)Permission denied: could not create /var/run/apache2.pid
[Wed May 20 12:48:52 2015] [error] apache2: could not log pid to file /var/run/apache2.pid
[ 20.05.2015 12:48:53 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:48:53 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:48:55 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_ConfigurationChangedEvent042110­172915 : Permission denied
[Wed May 20 12:48:55 2015] [error] (13)Permission denied: could not create /var/run/apache2.pid
[Wed May 20 12:48:55 2015] [error] apache2: could not log pid to file /var/run/apache2.pid
[ 20.05.2015 12:48:55 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:48:55 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:54:10 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_ConfigurationChangedEvent042110­172915 : Permission denied
[Wed May 20 12:54:10 2015] [error] (13)Permission denied: could not create /var/run/apache2.pid
[Wed May 20 12:54:10 2015] [error] apache2: could not log pid to file /var/run/apache2.pid
[ 20.05.2015 12:54:10 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied
[ 20.05.2015 12:54:10 WARNING] ZSemaphoreImpl::constructor: failed to open file /usr/local/zend/tmp/zsemfile_RestartAgentSem042110172915 : Permission denied

apache2 запускаю так /etc/init.d/apache2 start или так /etc/init.d/zend-server restart от root-а, результат одинаковый.
Содержимое /etc/apache2/envvars:
# envvars - default environment variables for apache2ctl

# Since there is no sane way to get the parsed apache2 config in scripts, some
# settings are defined via environment variables and then used in apache2ctl,
# /etc/init.d/apache2, /etc/logrotate.d/apache2, etc.
export APACHE_RUN_USER=bitrix
export APACHE_RUN_GROUP=bitrix
export APACHE_PID_FILE=/var/run/apache2.pid

. /etc/zce.rc

Права на /var/run:
ls -ld /var/run
drwxr-xr-t 10 root root 420 2015-05-20 14:05 /var/run

Права на /var/run пробовал менять, не помогло. Подскажите, пожалуйста, в чем может быть проблема?