Core i7 anyone else?

Hi, I recently bought Core i7 machine(for 145,000JPY: about $1500)
and sometimes hangs up oddly.
When in the state, some specific process only works and 
replys ping, but not reply any useful information.

I suspect it may caused by CPU power management, so I cut 
almost all CPU power management feature on BIOS parameter.

Are there any people encouterd such trouble?
And on this machine build world in SCHED_ULE(15min.) is slower 
than SCHED_4BSD(12min.).


===dmesg===
http://www.init-main.com/corei7.dmesg
or
http://pastebin.com/m187f77aa
(if host is down)

=====DSDT====
http://www.init-main.com/corei7.asl
or
http://pastebin.com/m6879984a

==some sysctls==
hw.machine: i386
hw.model: Intel(R) Core(TM) i7 CPU         920  _at_ 2.67GHz
hw.ncpu: 8
hw.byteorder: 1234
hw.physmem: 3202322432
hw.usermem: 2956083200
hw.pagesize: 4096
hw.floatingpoint: 1
hw.machine_arch: i386
hw.realmem: 3211264000
==
machdep.enable_panic_key: 0
machdep.adjkerntz: -32400
machdep.wall_cmos_clock: 1
machdep.disable_rtc_set: 0
machdep.disable_mtrrs: 0
machdep.guessed_bootdev: 2686451712
machdep.idle: acpi
machdep.idle_available: spin, mwait, mwait_hlt, hlt, acpi, 
machdep.hlt_cpus: 0
machdep.prot_fault_translation: 0
machdep.panic_on_nmi: 1
machdep.kdb_on_nmi: 1
machdep.tsc_freq: 2684011396
machdep.i8254_freq: 1193182
machdep.acpi_timer_freq: 3579545
machdep.acpi_root: 1024240
machdep.hlt_logical_cpus: 0
machdep.logical_cpus_mask: 254
machdep.hyperthreading_allowed: 1
==
kern.sched.preemption: 0
kern.sched.topology_spec: <groups>
 <group level="1" cache-level="0">
  <cpu count="8" mask="0xff">0, 1, 2, 3, 4, 5, 6, 7</cpu>
  <flags></flags>
 </group>
</groups>

kern.sched.steal_thresh: 3
kern.sched.steal_idle: 1
kern.sched.steal_htt: 1
kern.sched.balance_interval: 133
kern.sched.balance: 1
kern.sched.affinity: 1
kern.sched.idlespinthresh: 4
kern.sched.idlespins: 10000
kern.sched.static_boost: 160
kern.sched.preempt_thresh: 0
kern.sched.interact: 30
kern.sched.slice: 13
kern.sched.name: ULE
===