Cloned Processes

I have cloned processes in my vps server which is dissappointed me for using system resources high. When the server first opened (this is 2 days ago) system resources level is about 25%. After that I update my plesk version from 7.5.1 to 7.5.4. Then the problem occured! Many processes clone themselves which I write below from Virtuozzo 's System Processes and using more memory than before and my system resources up to 52-55%. I am worrying about that because I am the only one using this server now. And I know this is a problem or not.

Here is some processes from table:
7219 0.0 0.0 /usr/sbin/named -u named -c /etc/named.conf -u named -t /var/named/run-root 0 30 1928 S 00:00:00 named
7220 0.0 0.0 /usr/sbin/named -u named -c /etc/named.conf -u named -t /var/named/run-root 0 30 1928 S 00:00:01 named
7221 0.0 0.0 /usr/sbin/named -u named -c /etc/named.conf -u named -t /var/named/run-root 0 29 1928 S 00:00:00 named
7222 0.0 0.0 /usr/sbin/named -u named -c /etc/named.conf -u named -t /var/named/run-root 0 30 1928 S 00:00:00 named
7223 0.0 0.0 /usr/sbin/named -u named -c /etc/named.conf -u named -t /var/named/run-root 0 30 1928 S 00:00:00 named
...
7392 0.0 0.1 /usr/libexec/mysqld --defaults-file=/etc/my.cnf --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/mysqld/mysqld.pid --skip-locking 0 28 3840 S 00:00:10 mysql
7424 0.0 0.1 /usr/libexec/mysqld --defaults-file=/etc/my.cnf --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/mysqld/mysqld.pid --skip-locking 0 30 3840 S 00:00:00 mysql
7426 0.0 0.1 /usr/libexec/mysqld --defaults-file=/etc/my.cnf --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/mysqld/mysqld.pid --skip-locking 0 30 3840 S 00:00:00 mysql
7427 0.0 0.1 /usr/libexec/mysqld --defaults-file=/etc/my.cnf --basedir=/usr --datadir=/var/lib/mysql --user=mysql --pid-file=/var/run/mysqld/mysqld.pid --skip-locking 0 30 3840 S 00:00:00 mysql
7453 0.0 0.0 /usr/lib/courier-imap/couriertcpd -address=0 -stderrlogger=/usr/sbin/courierlogger -stderrloggername=imapd -maxprocs=40 -maxperip=4 -pid=/var/run/imapd.pid -nodnslookup -noidentlookup 143 /usr/sbin/imaplogin /usr/lib/courier-imap/authlib/authpsa /usr/bin/ 0 30 776 S 00:00:00 root
7455 0.0 0.0 /usr/sbin/courierlogger imapd 0 30 604 S 00:00:00 root
7713 0.0 0.0 /usr/lib/courier-imap/couriertcpd -address=0 -stderrlogger=/usr/sbin/courierlogger -stderrloggername=imapd-ssl -maxprocs=40 -maxperip=4 -pid=/var/run/imapd-ssl.pid -nodnslookup -noidentlookup 993 /usr/bin/couriertls -server -tcpd /usr/sbin/imaplogin /usr/ 0 31 776 S 00:00:00 root
7715 0.0 0.0 /usr/sbin/courierlogger imapd-ssl 0 30 604 S 00:00:00 root
7723 0.0 0.0 /usr/lib/courier-imap/couriertcpd -address=0 -stderrlogger=/usr/sbin/courierlogger -stderrloggername=pop3d -maxprocs=40 -maxperip=4 -pid=/var/run/pop3d.pid -nodnslookup -noidentlookup 110 /usr/sbin/pop3login /usr/lib/courier-imap/authlib/authpsa /usr/bin/ 0 30 776 S 00:00:00 root
7725 0.0 0.0 /usr/sbin/courierlogger pop3d 0 30 604 S 00:00:00 root
7735 0.0 0.0 /usr/lib/courier-imap/couriertcpd -address=0 -stderrlogger=/usr/sbin/courierlogger -stderrloggername=pop3d-ssl -maxprocs=40 -maxperip=4 -pid=/var/run/pop3d-ssl.pid -nodnslookup -noidentlookup 995 /usr/bin/couriertls -server -tcpd /usr/sbin/pop3login /usr/ 0 30 776 S 00:00:00 root
...
7974 0.0 0.2 /usr/sbin/httpd 0 30 6000 S 00:00:05 root
8590 0.0 0.0 /usr/local/psa/admin/bin/httpsd 0 30 1324 S 00:00:02 root
8594 0.0 0.1 /usr/local/psa/admin/bin/httpsd 0 30 2880 S 00:00:00 psaadm
8595 0.0 0.1 /usr/local/psa/admin/bin/httpsd 0 30 3516 S 00:00:00 psaadm
8596 0.0 0.1 /usr/local/psa/admin/bin/httpsd 0 30 2224 S 00:00:00 psaadm
8597 0.0 0.3 /usr/local/psa/admin/bin/httpsd 0 30 7984 S 00:00:00 psaadm
8598 0.0 0.1 /usr/local/psa/admin/bin/httpsd 0 30 2844 S 00:00:00 psaadm
8736 0.0 0.0 crond 0 39 548 S 00:00:00 root
8842 0.0 0.0 /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 0 0 30 556 S 00:00:00 root
9216 0.0 0.2 /usr/sbin/httpd 0 30 5052 S 00:00:00 root
9395 0.0 0.4 /usr/local/psa/admin/bin/httpsd 0 30 8264 S 00:00:00 psaadm
10767 0.0 0.3 /usr/sbin/httpd 0 30 6920 S 00:00:00 apache
10768 0.0 0.3 /usr/sbin/httpd 0 30 6912 S 00:00:00 apache
27139 0.0 0.4 /usr/local/psa/admin/bin/httpsd 0 30 8528 S 00:00:00 psaadm
Note: there are a lot of mysqld.pid process...

My server information of vps is below:
OS: Linux 2.4.20-021stab028.17.777-enterprise
Plesk Version: psa v7.5.4_build75050824.12 os_FedoraCore 1

Thanks for helping...

 

 

 

 

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