ACPI引起linux系统无故重启

新装机器无故重启多次。
centos6 64bit
uname -a
Linux Eos 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011 x86_64 x86_64 x86_64 GNU/Linux

硬件为Dell R410
E5606*2 4G*1 sas300G *2

系统负载基本为0，查看日志有acpi错误。
tail -n1000 /var/log/messages |grep -i error

Sep 11 10:25:25 C1gstudio kernel: ACPI Error: No handler for Region [IPMI] (ffff88012b6b7420) [IPMI] (20090903/evregion-319)
Sep 11 10:25:25 C1gstudio kernel: ACPI Error: Region IPMI(7) has no handler (20090903/exfldio-295)
Sep 11 10:25:25 C1gstudio kernel: ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PMI0._GHL] (Node ffff88012b6b6470), AE_NOT_EXIST
Sep 11 10:25:25 C1gstudio kernel: ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PMI0._PMC] (Node ffff88012b6b64f0), AE_NOT_EXIST
Sep 11 10:25:28 C1gstudio abrtd: dbus error: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory
Sep 11 10:25:28 C1gstudio abrtd: Error requesting DBus name com.redhat.abrt, possible reasons: abrt run by non-root; dbus config is incorrect; or dbus daemon needs to be restarted to reload dbus config
Sep 11 10:35:51 C1gstudio kernel: ACPI Error: No handler for Region [IPMI] (ffff88012b6b7420) [IPMI] (20090903/evregion-319)
Sep 11 10:35:51 C1gstudio kernel: ACPI Error: Region IPMI(7) has no handler (20090903/exfldio-295)
Sep 11 10:35:51 C1gstudio kernel: ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PMI0._GHL] (Node ffff88012b6b6470), AE_NOT_EXIST
Sep 11 10:35:51 C1gstudio kernel: ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PMI0._PMC] (Node ffff88012b6b64f0), AE_NOT_EXIST
Sep 11 10:35:53 C1gstudio abrtd: dbus error: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory
Sep 11 10:35:53 C1gstudio abrtd: Error requesting DBus name com.redhat.abrt, possible reasons: abrt run by non-root; dbus config is incorrect; or dbus daemon needs to be restarted to reload dbus config