debian死机

启动后进入gnome后，未进行任何操作即锁定桌面，三小时后系统死机。syslog中记录如下:
Aug 2 18:48:18 debws kernel: BUG: unable to handle kernel paging request at virtual address 5b1c9c48
Aug 2 18:48:18 debws kernel: printing eip:
Aug 2 18:48:18 debws kernel: c0174825
Aug 2 18:48:18 debws kernel: *pde = 00000000
Aug 2 18:48:18 debws kernel: Oops: 0000 [#1]
Aug 2 18:48:18 debws kernel: SMP
Aug 2 18:48:18 debws kernel: Modules linked in: vmnet(P) vmblock(P) vmmon(P) fglrx(P) button ac battery dm_snapshot dm_mirror dm_mod loop tsdev snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd parport_pc parport iTCO_wdt soundcore psmouse i2c_i801 pcspkr serio_raw snd_page_alloc rtc i2c_core shpchp pci_hotplug intel_agp agpgart evdev ext3 jbd mbcache sg sr_mod cdrom sd_mod 8139too generic ide_core ata_piix floppy ata_generic libata scsi_mod 8139cp mii ehci_hcd uhci_hcd usbcore thermal processor fan
Aug 2 18:48:18 debws kernel: CPU: 0
Aug 2 18:48:18 debws kernel: EIP: 0060:[<c0174825>] Tainted: P VLI
Aug 2 18:48:18 debws kernel: EFLAGS: 00210282 (2.6.22-1-686 #1)
Aug 2 18:48:18 debws kernel: EIP is at do_sys_poll+0x1cf/0x327
Aug 2 18:48:18 debws kernel: eax: f6979f14 ebx: 00000000 ecx: 00000000 edx: f695e580
Aug 2 18:48:18 debws kernel: esi: f6979e9c edi: f6979fac ebp: f6979e94 esp: f6979c30
Aug 2 18:48:18 debws kernel: ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Aug 2 18:48:18 debws kernel: Process gnome-panel (pid: 3091, ti=f6978000 task=f695e580 task.ti=f6978000)
Aug 2 18:48:18 debws kernel: Stack: f6979fac 08354fb8 08355030 00000000 f6979e94 f6979e94 f6979f14 00000000
Aug 2 18:48:18 debws kernel: f6979e94 c0175296 00000000 00000000 0000000f f6eb6a80 00000000 f695e580
Aug 2 18:48:18 debws kernel: c011e1e2 f6d8d004 f6d8d004 f6d8d000 f6eb6900 00000000 f695e580 c011e1e2
Aug 2 18:48:18 debws kernel: Call Trace:
Aug 2 18:48:18 debws kernel: [<c0175296>] __pollwait+0x0/0xac
Aug 2 18:48:18 debws kernel: [<c011e1e2>] default_wake_function+0x0/0xc
Aug 2 18:48:18 debws last message repeated 14 times
Aug 2 18:48:18 debws kernel: [<c016ff82>] do_lookup+0x4f/0x140
Aug 2 18:48:18 debws kernel: [<c01cc6ce>] _atomic_dec_and_lock+0x2a/0x44
Aug 2 18:48:18 debws kernel: [<c017c128>] mntput_no_expire+0x11/0x6a
Aug 2 18:48:18 debws kernel: [<c017209f>] __link_path_walk+0xc03/0xc2d
Aug 2 18:48:18 debws kernel: [<c017c128>] mntput_no_expire+0x11/0x6a
Aug 2 18:48:18 debws kernel: [<c0172172>] link_path_walk+0xa9/0xb3
Aug 2 18:48:18 debws kernel: [<c017c128>] mntput_no_expire+0x11/0x6a
Aug 2 18:48:18 debws kernel: [<c0172bb5>] __user_walk_fd+0x3d/0x45
Aug 2 18:48:18 debws kernel: [<c0298c34>] unix_ioctl+0x8b/0x93
Aug 2 18:48:18 debws kernel: [<c023ea22>] sock_ioctl+0x19f/0x1be
Aug 2 18:48:18 debws kernel: [<c023e883>] sock_ioctl+0x0/0x1be
Aug 2 18:48:18 debws kernel: [<c0173e4d>] do_ioctl+0x21/0x9f
Aug 2 18:48:18 debws kernel: [<c016cc26>] sys_stat64+0x1e/0x23
Aug 2 18:48:18 debws kernel: [<c013689d>] do_gettimeofday+0x31/0xce
Aug 2 18:48:18 debws kernel: [<c01749b1>] sys_poll+0x34/0x37
Aug 2 18:48:18 debws kernel: [<c0103d0e>] sysenter_past_esp+0x6b/0xa1
Aug 2 18:48:18 debws kernel: =======================
Aug 2 18:48:18 debws kernel: Code: d8 21 d3 83 bc 24 64 03 00 00 00 74 07 89 f8 e8 25 65 ff ff 85 db 66 89 5e 06 74 0c ff 44 24 0c c7 44 24 1c 00 00 00 00 83 c6 08 <3b> 74 24 18 75 88 8b 6d 00 85 ed 0f 85 6e ff ff ff 8b 74 24 0c
Aug 2 18:48:18 debws kernel: EIP: [<c0174825>] do_sys_poll+0x1cf/0x327 SS:ESP 0068:f6979c30

环境：
os: debian sid
kernel: 2.6.22-1-686 启动时关闭了apic noapic
cpu: intel p4 2.8c (bios中关闭ht)
mem: ddr 2700 2*512M

哪位dx帮忙一下，究竟是什么原因导致死机？

unable to handle kernel paging request at virtual address xxxxxx

也许是硬件问题，也许是程序自身的问题，不太好说。

debian版本？机子的主板？

建议最小化安装看看是否有问题。

估计是硬件问题。
我实验室有一台debian服务器也出过这种问题。 当时实验室装修，服务器在很恶劣的环境下工作了3个月，终于不照了。后来做了除尘处理就再也没有遇到过。