[CentOS] Centos6.4 cannot reboot

Dear all，
   I install new version centos 6.4 64bit and everything is ok except it cannot reboot, below is the /var/messages information:


May 20 10:08:07 ravi2 smbd[1712]:   failed to retrieve printer list: NT_STATUS_UNSUCCESSFUL
May 20 10:22:24 ravi2 init: tty (/dev/tty1) main process (1727) killed by TERM signal
May 20 10:22:24 ravi2 init: tty (/dev/tty2) main process (1729) killed by TERM signal
May 20 10:22:24 ravi2 init: tty (/dev/tty3) main process (1731) killed by TERM signal
May 20 10:22:24 ravi2 init: tty (/dev/tty4) main process (1733) killed by TERM signal
May 20 10:22:24 ravi2 init: tty (/dev/tty5) main process (1735) killed by TERM signal
May 20 10:22:24 ravi2 init: tty (/dev/tty6) main process (1737) killed by TERM signal
May 20 10:22:25 ravi2 xinetd[1618]: Exiting...
May 20 10:22:26 ravi2 init: Disconnected from system bus
May 20 10:22:26 ravi2 auditd[1530]: The audit daemon is exiting.
May 20 10:22:26 ravi2 kernel: type=1305 audit(1369016546.436:112): audit_pid=0 old=1530 auid=4294967295 ses=4294967295 subj=system_u:system_r:auditd_t:s0 res=1
May 20 10:22:26 ravi2 kernel: type=1305 audit(1369016546.539:113): audit_enabled=0 old=1 auid=4294967295 ses=4294967295 subj=system_u:system_r:auditctl_t:s0 res=1
May 20 10:22:26 ravi2 kernel: Kernel logging (proc) stopped.
May 20 10:22:26 ravi2 rsyslogd: [origin software="rsyslogd" swVersion="5.8.10" x-pid="1546" x-info="http://www.rsyslog.com"] exiting on signal 15.
(No message after this line until I click the Reset button)


  Do you know why?




Muiz