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Description of problem:
Sometimes after leaving my machine alone for a while and I come back to it, it's
all locked up.  Fortunately, it's nice enough to leave me a friendly message in
/var/log/messages.  I haven't seen this problem occur when I roll my own kernel
(2.4.19).  Unfortunately, I just got a new fancy shmancy high end system and I
can't seem to get DMA working with my own kernel.  Perhaps you have a newer
patch that makes it work than appears in my own.  Anyway, the bug.  Here's the
message it leaves:

Oct  3 04:04:37 hostess kernel: VM: refill_inactive, wrong page on list.
Oct  3 04:04:37 hostess kernel: VM: refill_inactive, wrong page on list.
Oct  3 04:04:37 hostess kernel: Unable to handle kernel paging request at
virtual address 00498694
Oct  3 04:04:37 hostess kernel:  printing eip:
Oct  3 04:04:37 hostess kernel: c01368d6
Oct  3 04:04:37 hostess kernel: *pde = 00000000
Oct  3 04:04:37 hostess kernel: Oops: 0002
Oct  3 04:04:37 hostess kernel: sr_mod emu10k1 ac97_codec sound soundcore
NVdriver binfmt_misc parport_pc lp p
Oct  3 04:04:37 hostess kernel: CPU:    0
Oct  3 04:04:37 hostess kernel: EIP:    0010:[<c01368d6>]    Tainted: P
Oct  3 04:04:37 hostess kernel: EFLAGS: 00210286
Oct  3 04:04:37 hostess kernel:
Oct  3 04:04:37 hostess kernel: EIP is at refill_inactive_zone [kernel] 0x1d6
(2.4.18-14)
Oct  3 04:04:37 hostess kernel: eax: c03054c4   ebx: db7e3240   ecx: 00000001  
edx: 00498694
Oct  3 04:04:37 hostess kernel: esi: db7e3224   edi: 00000134   ebp: c0305480  
esp: c170dfac
Oct  3 04:04:37 hostess kernel: ds: 0018   es: 0018   ss: 0018
Oct  3 04:04:37 hostess kernel: Process kswapd (pid: 5, stackpage=c170d000)
Oct  3 04:04:37 hostess kernel: Stack: c0259fa0 00000002 c03054c4 c170c000
00000000 00004e5f c170c000 c0305480
Oct  3 04:04:37 hostess kernel:        c170c245 0008e000 c0136c94 c0305480
00000006 c23a0018 00010f00 c23a5fb8
Oct  3 04:04:37 hostess kernel:        c0105000 c010744e 00000000 c0136b60 00000000
Oct  3 04:04:37 hostess kernel: Call Trace: [<c0136c94>] kswapd [kernel] 0x134
(0xc170dfd4))
Oct  3 04:04:37 hostess kernel: [<c0105000>] stext [kernel] 0x0 (0xc170dfec))
Oct  3 04:04:37 hostess kernel: [<c010744e>] kernel_thread [kernel] 0x2e
(0xc170dff0))
Oct  3 04:04:37 hostess kernel: [<c0136b60>] kswapd [kernel] 0x0 (0xc170dff8))
Oct  3 04:04:37 hostess kernel:
Oct  3 04:04:37 hostess kernel:
Oct  3 04:04:37 hostess kernel: Code: 89 02 ff 0d 1c 08 39 c0 e9 bd fe ff ff 90
8d b6 00 00 00 00

This is the second time it happened, and I've only had it running for three
days.  The first time happened 45 minutes after turning on.  The second occured
7.5 hours after.  

Version-Release number of selected component (if applicable):


How reproducible:
Sometimes

Steps to Reproduce:
1.turn on the computer
2.let it sit there until it locks up
3.profit!!!
	

Actual Results: It crashed.  Ruined my reputation among my peers and family,
"Ha ha, playing with your 'stable' OS again?!  You luser, ha ha ha"

Expected Results:  "Wow, like, dude.  Your system is rock solid.  Can you teach
me to use linux?"

Additional info:
I've got a Soyo SY-P4X400 Dragon Ultra mobo w/ 512Mb of DDR PC-3200 RAM