[Serusers] Sometimes ser is not started correctly

Hello, Sometimes, when I restart ser or when I reboot the server ser is not correctly started. When ser is started, the server indicate that it is ok, but when I try to stop ser I receive an error. I have tried to restart several times ser and I see that it is not each time. login as: root Sent username "root" root(a)10.192.72.169's password: [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [FAILED] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [FAILED] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [ OK ] Starting ser: [ OK ] [root@edu-pc134 root]# /etc/rc.d/init.d/ser restart Stopping ser: [FAILED] Starting ser: [ OK ] [root@edu-pc134 root]# Oct 28 13:20:02 edu-pc134 ser: ser shutdown succeeded Oct 28 13:20:02 edu-pc134 ser: Listening on Oct 28 13:20:02 edu-pc134 ser: 127.0.0.1 [127.0.0.1]:5060 Oct 28 13:20:02 edu-pc134 ser: 10.192.72.169 [10.192.72.169]:5060 Oct 28 13:20:02 edu-pc134 ser: Aliases: edu-pc134.tcom.eivd.ch:5060 edu-pc134:5060 localhost.localdomain:5060 localhost:5060 Oct 28 13:20:02 edu-pc134 ser: ser startup succeeded Oct 28 13:20:02 edu-pc134 ser: ser shutdown failed Oct 28 13:20:02 edu-pc134 /usr/sbin/ser[2059]: mod_init(): Database connection opened successfuly Oct 28 13:20:02 edu-pc134 /usr/sbin/ser[2059]: INFO: udp_init: SO_RCVBUF is initially 65535 Oct 28 13:20:02 edu-pc134 /usr/sbin/ser[2059]: INFO: udp_init: SO_RCVBUF is finally 131070 Oct 28 13:20:02 edu-pc134 /usr/sbin/ser[2059]: INFO: udp_init: SO_RCVBUF is initially 65535 Oct 28 13:20:02 edu-pc134 /usr/sbin/ser[2059]: INFO: udp_init: SO_RCVBUF is finally 131070 Oct 28 13:20:02 edu-pc134 ser: Listening on Oct 28 13:20:02 edu-pc134 ser: 127.0.0.1 [127.0.0.1]:5060 Oct 28 13:20:02 edu-pc134 ser: 10.192.72.169 [10.192.72.169]:5060 Oct 28 13:20:02 edu-pc134 ser: Aliases: edu-pc134.tcom.eivd.ch:5060 edu-pc134:5060 localhost.localdomain:5060 localhost:5060 Oct 28 13:20:02 edu-pc134 ser: Listening on Oct 28 13:20:02 edu-pc134 ser: 127.0.0.1 [127.0.0.1]:5060 Oct 28 13:20:02 edu-pc134 ser: 10.192.72.169 [10.192.72.169]:5060 Oct 28 13:20:02 edu-pc134 ser: Aliases: edu-pc134.tcom.eivd.ch:5060 edu-pc134:5060 localhost.localdomain:5060 localhost:5060 Oct 28 13:20:02 edu-pc134 ser: Listening on Oct 28 13:20:02 edu-pc134 ser: 127.0.0.1 [127.0.0.1]:5060 Oct 28 13:20:02 edu-pc134 ser: 10.192.72.169 [10.192.72.169]:5060 Oct 28 13:20:02 edu-pc134 ser: Aliases: edu-pc134.tcom.eivd.ch:5060 edu-pc134:5060 localhost.localdomain:5060 localhost:5060 Oct 28 13:20:02 edu-pc134 ser: ser startup succeeded