Hi!

I have a problem with a FC2 linux on two computers (Celeron 2.66 GHz).
After a couple of days computers would freeze so I have to reset them.
I have tried the memtest, which shows no errors, I also tried compiling new
kernels (2.6.10 and 2.6.11) but to no avail. Does anyone have any ideas
what might be the cause and how to fix it?
I have no such problems on two AMDs with similar configuration.

Thanks
aless
P.S. In logs I get messages like (processes might vary from failure to failure):

Jun 27 18:50:53 mashina kernel: Unable to handle kernel paging request at virtual address d268228b
Jun 27 18:50:53 mashina kernel: printing eip:
Jun 27 18:50:53 mashina kernel: 0213124e
Jun 27 18:50:53 mashina kernel: *pde = 00000000
Jun 27 18:50:53 mashina kernel: Oops: 0002 [#1]
Jun 27 18:50:53 mashina kernel: CPU: 0
Jun 27 18:50:53 mashina kernel: EIP: 0060:[<0213124e>] Not tainted
Jun 27 18:50:53 mashina kernel: EFLAGS: 00010006 (2.6.5-1.358)
Jun 27 18:50:53 mashina kernel: EIP is at cache_alloc_refill+0xda/0x15f
Jun 27 18:50:53 mashina kernel: eax: d2682287 ebx: 21f2cb10 ecx: 2162ff8c
edx: 68000004
Jun 27 18:50:53 mashina kernel: esi: 0000000c edi: 21f2ff8c ebp: 21f2ff80
esp: 18238e28
Jun 27 18:50:53 mashina kernel: ds: 007b es: 007b ss: 0068
Jun 27 18:50:53 mashina kernel: Process sendmail (pid: 2348, threadinfo=18238000 task=20c90cb0)
Jun 27 18:50:53 mashina kernel: Stack: 000000d0 000000d0 21f2ff80 00000246 18238000 02131464 0f7ba800 18238ef0
Jun 27 18:50:53 mashina kernel: 0f7baa44 02116c42 00000001 00000000 0f7ba800 00000000 00000000 0f7ba9b8
Jun 27 18:50:53 mashina kernel: 0f7ba9b8 00000000 00000000 00000000 00000000 00000000 ffffffff 00000000
Jun 27 18:50:53 mashina kernel: Call Trace:
Jun 27 18:50:53 mashina kernel: [<02131464>] kmem_cache_alloc+0x3f/0x45
Jun 27 18:50:53 mashina kernel: [<02116c42>] mm_init+0x89/0xbb
Jun 27 18:50:53 mashina kernel: [<02116ea6>] copy_mm+0xd8/0x3c6
Jun 27 18:50:53 mashina kernel: [<02117a6e>] copy_process+0x560/0x8db
Jun 27 18:50:53 mashina kernel: [<0213f423>] put_user_size+0x29/0x2d
Jun 27 18:50:53 mashina kernel: [<02117e57>] do_fork+0x6e/0x14a
Jun 27 18:50:53 mashina kernel: [<021048e3>] sys_clone+0x25/0x29
Jun 27 18:50:53 mashina kernel:
Jun 27 18:50:53 mashina kernel: Code: 89 50 04 89 02 83 79 14 ff c7 01 00 01 10 00 c7 41 04 00 02
Jun 27 18:55:00 mashina kernel: <1>Unable to handle kernel NULL pointer dereference at virtual address 00000004
Jun 27 18:55:00 mashina kernel: printing eip:
Jun 27 18:55:00 mashina kernel: 0213124e
Jun 27 18:55:00 mashina kernel: *pde = 00000000
Jun 27 18:55:00 mashina kernel: Oops: 0002 [#2]
Jun 27 18:55:00 mashina kernel: CPU: 0
Jun 27 18:55:00 mashina kernel: EIP: 0060:[<0213124e>] Not tainted
Jun 27 18:55:00 mashina kernel: EFLAGS: 00010006 (2.6.5-1.358)
Jun 27 18:55:00 mashina kernel: EIP is at cache_alloc_refill+0xda/0x15f
Jun 27 18:55:00 mashina kernel: eax: 00000000 ebx: 21f2cb10 ecx: 20b5ff8c
edx: 00000000
Jun 27 18:55:00 mashina kernel: esi: 0000000c edi: 21f2ff8c ebp: 21f2ff80
esp: 181b6e28
Jun 27 18:55:00 mashina kernel: ds: 007b es: 007b ss: 0068
Jun 27 18:55:00 mashina kernel: Process crond (pid: 2444, threadinfo=181b6000 task=21ccd1b0)
Jun 27 18:55:00 mashina kernel: Stack: 000000d0 000000d0 21f2ff80 00000246 181b6000 02131464 21122300 181b6ef0
Jun 27 18:55:00 mashina kernel: 21122544 02116c42 00000001 00000000 21122300 00000000 00000000 211224b8
Jun 27 18:55:00 mashina kernel: 211224b8 00000000 00000000 00000000 00000000 00000000 ffffffff 00000000
Jun 27 18:55:00 mashina kernel: Call Trace:
Jun 27 18:55:00 mashina kernel: [<02131464>] kmem_cache_alloc+0x3f/0x45
Jun 27 18:55:00 mashina kernel: [<02116c42>] mm_init+0x89/0xbb
Jun 27 18:55:00 mashina kernel: [<02116ea6>] copy_mm+0xd8/0x3c6
Jun 27 18:55:00 mashina kernel: [<02117a6e>] copy_process+0x560/0x8db
Jun 27 18:55:00 mashina kernel: [<02117e57>] do_fork+0x6e/0x14a
Jun 27 18:55:00 mashina kernel: [<0210a218>] do_gettimeofday+0x14/0x96
Jun 27 18:55:00 mashina kernel: [<021048e3>] sys_clone+0x25/0x29
Jun 27 18:55:00 mashina kernel:
Jun 27 18:55:00 mashina kernel: Code: 89 50 04 89 02 83 79 14 ff c7 01 00 01 10 00 c7 41 04 00 02
Jun 27 19:50:53 mashina kernel: <1>Unable to handle kernel NULL pointer dereference at virtual address 00000004
Jun 27 19:50:53 mashina kernel: printing eip:
Jun 27 19:50:53 mashina kernel: 0213124e
Jun 27 19:50:53 mashina kernel: *pde = 00000000
Jun 27 19:50:53 mashina kernel: Oops: 0002 [#3]
Jun 27 19:50:53 mashina kernel: CPU: 0
Jun 27 19:50:53 mashina kernel: EIP: 0060:[<0213124e>] Not tainted
Jun 27 19:50:53 mashina kernel: EFLAGS: 00010006 (2.6.5-1.358)
Jun 27 19:50:53 mashina kernel: EIP is at cache_alloc_refill+0xda/0x15f
Jun 27 19:50:53 mashina kernel: eax: 00000000 ebx: 21f2cb10 ecx: 20b5ff8c
edx: 00000000
Jun 27 19:50:53 mashina kernel: esi: 0000000c edi: 21f2ff8c ebp: 21f2ff80
esp: 18237e28
Jun 27 19:50:53 mashina kernel: ds: 007b es: 007b ss: 0068
Jun 27 19:50:53 mashina kernel: Process sendmail (pid: 2357, threadinfo=18237000 task=20c917b0)
Jun 27 19:50:53 mashina kernel: Stack: 000000d0 000000d0 21f2ff80 00000246 18237000 02131464 2132ba80 18237ef0
Jun 27 19:50:53 mashina kernel: 2132bcc4 02116c42 00000001 00000000 2132ba80 00000000 00000000 2132bc38
Jun 27 19:50:53 mashina kernel: 2132bc38 00000000 00000000 00000000 00000000 00000000 ffffffff 00000000
Jun 27 19:50:53 mashina kernel: Call Trace:
Jun 27 19:50:53 mashina kernel: [<02131464>] kmem_cache_alloc+0x3f/0x45
Jun 27 19:50:53 mashina kernel: [<02116c42>] mm_init+0x89/0xbb
Jun 27 19:50:53 mashina kernel: [<02116ea6>] copy_mm+0xd8/0x3c6
Jun 27 19:50:53 mashina kernel: [<02117a6e>] copy_process+0x560/0x8db
Jun 27 19:50:53 mashina kernel: [<0213f423>] put_user_size+0x29/0x2d
Jun 27 19:50:53 mashina kernel: [<02117e57>] do_fork+0x6e/0x14a
Jun 27 19:50:53 mashina kernel: [<021048e3>] sys_clone+0x25/0x29
Jun 27 19:50:53 mashina kernel:
Jun 27 19:50:53 mashina kernel: Code: 89 50 04 89 02 83 79 14 ff c7 01 00 01 10 00 c7 41 04 00 02