linux服务器 ACPID服务为什么每天重启

#cat /var/log/boot.log
显示如下：
May 18 04:02:09 Host1 acpid: acpid startup succeeded
May 18 04:02:09 Host1 acpid: acpid shutdown succeeded

May 17 04:02:09 Host1 acpid: acpid startup succeeded
May 17 04:02:09 Host1 acpid: acpid shutdown succeeded

May 16 04:02:09 Host1 acpid: acpid startup succeeded
May 16 04:02:09 Host1 acpid: acpid shutdown succeeded

May 15 04:02:09 Host1 acpid: acpid startup succeeded
May 15 04:02:09 Host1 acpid: acpid shutdown succeeded

为什么会在每天定时重启ACPID服务啊？是什么原因？怎么解决？