This is the result with the kernel in #6


Aug 23 23:35:33 marte kernel: [   99.556970] BUG: unable to handle kernel paging request at fffffff3
Aug 23 23:35:33 marte kernel: [   99.556984] IP: [<c024d582>] vma_stop+0x12/0x30
Aug 23 23:35:33 marte kernel: [   99.557000] *pde = 00855067 *pte = 00000000 
Aug 23 23:35:33 marte kernel: [   99.557010] Oops: 0000 [#32] SMP 
Aug 23 23:35:33 marte kernel: [   99.557018] last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-0:1.0/uevent
Aug 23 23:35:33 marte kernel: [   99.557025] Modules linked in: aes_i586 aes_generic rfcomm binfmt_misc ppdev sco bridge stp bnep l2cap joydev snd_hda_codec_idt ipt_REJECT ipt_LOG xt_limit xt_tcpudp ipt_addrtype xt_state snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss ip6table_filter ip6_tables snd_pcm nf_nat_irc snd_seq_dummy snd_seq_oss nf_conntrack_irc arc4 snd_seq_midi nf_nat_ftp nf_nat snd_rawmidi nf_conntrack_ipv4 nf_defrag_ipv4 pcmcia nf_conntrack_ftp nf_conntrack iptable_filter snd_seq_midi_event iwlagn ip_tables btusb x_tables bluetooth snd_seq iwlcore dell_wmi snd_timer snd_seq_device mac80211 led_class yenta_socket rsrc_nonstatic snd dell_laptop dcdbas psmouse coretemp pcmcia_core serio_raw cfg80211 soundcore snd_page_alloc lp parport fbcon tileblit font bitblit softcursor vga16fb vgastate i915 ohci1394 drm_kms_helper ieee1394 drm i2c_algo_bit intel_agp agpgart tg3 video output
Aug 23 23:35:33 marte kernel: [   99.557201] 
Aug 23 23:35:33 marte kernel: [   99.557209] Pid: 2104, comm: lsof Tainted: G      D    (2.6.32-34-generic #73~lp828550v201108191554) Latitude D830                   
Aug 23 23:35:33 marte kernel: [   99.557217] EIP: 0060:[<c024d582>] EFLAGS: 00210213 CPU: 0
Aug 23 23:35:33 marte kernel: [   99.557225] EIP is at vma_stop+0x12/0x30
Aug 23 23:35:33 marte kernel: [   99.557230] EAX: f53e7940 EBX: f53e7940 ECX: c05a2878 EDX: fffffff3
Aug 23 23:35:33 marte kernel: [   99.557236] ESI: f33cb840 EDI: fffffff3 EBP: f2eddf10 ESP: f2eddf0c
Aug 23 23:35:33 marte kernel: [   99.557242]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Aug 23 23:35:33 marte kernel: [   99.557249] Process lsof (pid: 2104, ti=f2edc000 task=f2c33fc0 task.ti=f2edc000)
Aug 23 23:35:33 marte kernel: [   99.557254] Stack:
Aug 23 23:35:33 marte kernel: [   99.557257]  f53e7940 f2eddf1c c024d8a3 f3136000 f2eddf64 c02253ed 00001000 000000d0
Aug 23 23:35:33 marte kernel: [   99.557275] <0> 00000000 fffffff3 09975298 f33cb868 00001000 00000000 f33c4900 fffb25d8
Aug 23 23:35:33 marte kernel: [   99.557294] <0> f375e098 00000000 00000000 f33c4900 00001000 09975298 f2eddf8c c020a80f
Aug 23 23:35:33 marte kernel: [   99.557313] Call Trace:
Aug 23 23:35:33 marte kernel: [   99.557322]  [<c024d8a3>] ? m_stop+0x13/0x30
Aug 23 23:35:33 marte kernel: [   99.557332]  [<c02253ed>] ? seq_read+0x16d/0x3a0
Aug 23 23:35:33 marte kernel: [   99.557343]  [<c020a80f>] ? vfs_read+0x9f/0x1a0
Aug 23 23:35:33 marte kernel: [   99.557351]  [<c0225280>] ? seq_read+0x0/0x3a0
Aug 23 23:35:33 marte kernel: [   99.557363]  [<c058f0f0>] ? do_page_fault+0x160/0x3a0
Aug 23 23:35:33 marte kernel: [   99.557370]  [<c020a9c2>] ? sys_read+0x42/0x70
Aug 23 23:35:33 marte kernel: [   99.557380]  [<c01033ec>] ? syscall_call+0x7/0xb
Aug 23 23:35:33 marte kernel: [   99.557390]  [<c0590000>] ? kprobes_module_callback+0x30/0x100
Aug 23 23:35:33 marte kernel: [   99.557395] Code: 8b 5d 08 2b 48 6c 89 0b 8b 48 58 03 0a 8b 55 0c 89 0a 8b 40 64 5b 5e 5d c3 55 89 e5 53 0f 1f 44 00 00 85 d2 74 16 39 50 08 74 11 <8b> 1a 8d 43 38 e8 64 f8 f1 ff 89 d8 e8 fd de ef ff 5b 5d c3 8d 
Aug 23 23:35:33 marte kernel: [   99.557496] EIP: [<c024d582>] vma_stop+0x12/0x30 SS:ESP 0068:f2eddf0c
Aug 23 23:35:33 marte kernel: [   99.557508] CR2: 00000000fffffff3
Aug 23 23:35:33 marte kernel: [   99.557515] ---[ end trace 9d02cddcabb34c85 ]---


regards,
al.o