I mannaged to get the following during the night:
The machine did not freeze like last time but I did lose my wireless link and then it froze on the reboot ...


[32709.031457] BUG: unable to handle kernel paging request at f91ed01e
[32709.033399] IP: [<f906b759>] :ath_rate_sample:calc_usecs_unicast_packet+0x29/0x260
[32709.035363] *pde = 3786a067 *pte = 00000000 
[32709.035372] Oops: 0000 [#1] SMP 
[32709.035407] Modules linked in: af_packet i915 drm binfmt_misc rfcomm bnep sco l2cap ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 xt_state nf_conntr
ack ipt_REJECT xt_tcpudp bridge stp kvm_intel kvm ppdev tun ipv6 acpi_cpufreq cpufreq_powersave cpufreq_stats cpufreq_userspace cpufreq_ondemand cpufreq_cons
ervative freq_table container wmi sbs pci_slot sbshc iptable_filter ip_tables x_tables parport_pc lp parport joydev pcmcia snd_hda_intel snd_pcm_oss snd_mixe
r_oss snd_pcm snd_seq_dummy thinkpad_acpi rfkill btusb snd_seq_oss bluetooth yenta_socket led_class nvram snd_seq_midi rsrc_nonstatic pcmcia_core wlan_scan_sta psmouse iTCO_wdt ath_rate_sample serio_raw evdev iTCO_vendor_support option ath_pci usbserial wlan snd_rawmidi nsc_ircc ath_hal(P) battery snd_seq_midi_event irda ac video snd_seq output snd_timer crc_ccitt snd_seq_device snd soundcore button intel_agp agpgart snd_page_alloc shpchp pci_hotplug reiserfs sd_mod crc_t10dif sg ata_piix ata_generic pata_acpi ahci ehci_hcd libata scsi_mod dock uhci_hcd usbcore e1000e dm_mirror dm_log dm_snapshot dm_mod thermal processor fan fuse vesafb fbcon tileblit font bitblit softcursor
[32709.035407] 
[32709.035407] Pid: 0, comm: swapper Tainted: P          (2.6.27-10-generic #1)
[32709.035407] EIP: 0060:[<f906b759>] EFLAGS: 00010246 CPU: 0
[32709.035407] EIP is at calc_usecs_unicast_packet+0x29/0x260 [ath_rate_sample]
[32709.035407] EAX: 00001e1e EBX: 00000a0a ECX: f91e5780 EDX: f91ed018
[32709.035407] ESI: 00000003 EDI: 00000000 EBP: c04a7cbc ESP: c04a7c78
[32709.035407]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[32709.035407] Process swapper (pid: 0, ti=c04a6000 task=c046e340 task.ti=c04a6000)
[32709.035407] Stack: 00040008 f7b500b6 000014a0 c04a7ca0 0000001b 000000fa f6574480 f91e5780 
[32709.035407]        f7b50000 14a0000a 002f001a 000000e0 00140000 f91cb39b 00000003 00000003 
[32709.035407]        00000000 c04a7d1c f906ba54 00000000 00000002 f91d37be f7ac0000 c037e59e 
[32709.035407] Call Trace:
[32709.035407]  [<f91cb39b>] ? zz06e0fc0d+0x553/0x82c [ath_hal]
[32709.035407]  [<f906ba54>] ? update_stats+0xc4/0x400 [ath_rate_sample]
[32709.035407]  [<f91d37be>] ? zz0016cd32+0x1062/0x1500 [ath_hal]
[32709.035407]  [<c037e59e>] ? account_scheduler_latency+0xe/0x220
[32709.035407]  [<f906c422>] ? ath_rate_tx_complete+0x692/0x780 [ath_rate_sample]
[32709.035407]  [<c024d575>] ? __next_cpu+0x15/0x30
[32709.035407]  [<c0129804>] ? find_busiest_group+0xc4/0x7c0
[32709.035407]  [<f921506c>] ? ath_tx_processq+0x68c/0x810 [ath_pci]
[32709.035407]  [<f920cf27>] ? tasklet_schedule+0x27/0x30 [ath_pci]
[32709.035407]  [<f92179c1>] ? ath_intr+0x131/0xc50 [ath_pci]
[32709.035407]  [<c037e59e>] ? account_scheduler_latency+0xe/0x220
[32709.035407]  [<c0136966>] ? set_normalized_timespec+0x16/0x90
[32709.035407]  [<f921555b>] ? ath_tx_tasklet+0x6b/0x100 [ath_pci]
[32709.035407]  [<c0137248>] ? tasklet_action+0x78/0x100
[32709.035407]  [<c0137672>] ? __do_softirq+0x92/0x120
[32709.035407]  [<c013775d>] ? do_softirq+0x5d/0x60
[32709.035407]  [<c01378d5>] ? irq_exit+0x55/0x90
[32709.035407]  [<c0106c1a>] ? do_IRQ+0x4a/0x80
[32709.035407]  [<c012b4ee>] ? try_to_wake_up+0xde/0x290
[32709.035407]  [<c0105003>] ? common_interrupt+0x23/0x30
[32709.035407]  [<c01200d8>] ? arch_setup_additional_pages+0x98/0x130
[32709.035407]  [<c0153a83>] ? tick_nohz_stop_sched_tick+0xd3/0x360
[32709.035407]  [<c0102842>] ? cpu_idle+0x32/0x140
[32709.035407]  [<c036f3c3>] ? rest_init+0x53/0x60
[32709.035407]  =======================
[32709.035407] Code: ff ff 55 89 e5 57 56 53 83 ec 38 e8 62 9b 09 c7 89 55 d0 89 cb 89 45 d4 8b 80 4c 0f 00 00 89 45 d8 8d 04 49 8b 4d d8 8d 54 81 20 <66> 83 7a 06 00 0f 84 e9 01 00 00 0f b6 52 05 c7 45 e8 00 00 00 
[32709.035407] EIP: [<f906b759>] calc_usecs_unicast_packet+0x29/0x260 [ath_rate_sample] SS:ESP 0068:c04a7c78
[32709.035407] BUG: scheduling while atomic: swapper/0/0x10000100
[32709.035407] Modules linked in: af_packet i915 drm binfmt_misc rfcomm bnep sco l2cap ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp bridge stp kvm_intel kvm ppdev tun ipv6 acpi_cpufreq cpufreq_powersave cpufreq_stats cpufreq_userspace cpufreq_ondemand cpufreq_conservative freq_table container wmi sbs pci_slot sbshc iptable_filter ip_tables x_tables parport_pc lp parport joydev pcmcia snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy thinkpad_acpi rfkill btusb snd_seq_oss bluetooth yenta_socket led_class nvram snd_seq_midi rsrc_nonstatic pcmcia_core wlan_scan_sta psmouse iTCO_wdt ath_rate_sample serio_raw evdev iTCO_vendor_support option ath_pci usbserial wlan snd_rawmidi nsc_ircc ath_hal(P) battery snd_seq_midi_event irda ac video snd_seq output snd_timer crc_ccitt snd_seq_device snd soundcore button intel_agp agpgart snd_page_alloc shpchp pci_hotplug reiserfs sd_mod crc_t10dif sg ata_piix ata_generic pata_acpi ahci ehci_hcd libata scsi_mod dock uhci_hcd usbcore e1000e dm_mirror dm_log dm_snapshot dm_mod thermal processor fan fuse vesafb fbcon tileblit font bitblit softcursor
[32709.035407] 
[32709.035407] Pid: 0, comm: swapper Tainted: P          (2.6.27-10-generic #1)
[32709.035407] EIP: 0060:[<c0153a83>] EFLAGS: 00000246 CPU: 0
[32709.035407] EIP is at tick_nohz_stop_sched_tick+0xd3/0x360
[32709.035407] EAX: 00000246 EBX: c21fc6a0 ECX: 007ba171 EDX: 00000000
[32709.035407] ESI: 007ba171 EDI: c21fb120 EBP: c04a7fa4 ESP: c04a7f54
[32709.035407]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[32709.035407] CR0: 8005003b CR2: f91ed01e CR3: 2d313000 CR4: 00002690
[32709.035407] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[32709.035407] DR6: ffff0ff0 DR7: 00000400
[32709.035407]  [<c0102842>] cpu_idle+0x32/0x140
[32709.035407]  [<c036f3c3>] rest_init+0x53/0x60
[32709.035407]  =======================
[36042.299430] type=1503 audit(1228440328.078:20): operation="inode_permission" requested_mask="::r" denied_mask="::r" fsuid=112 name="/proc/5052/net/if_inet6" pid=5053 profile="/usr/sbin/named"
[39642.299468] type=1503 audit(1228443928.078:21): operation="inode_permission" requested_mask="::r" denied_mask="::r" fsuid=112 name="/proc/5052/net/if_inet6" pid=5054 profile="/usr/sbin/named"
[40991.078374] wifi0: rx FIFO overrun; resetting
[41111.499884] wifi0: rx FIFO overrun; resetting
[43031.271561] wifi0: rx FIFO overrun; resetting
[43242.299507] type=1503 audit(1228447528.078:22): operation="inode_permission" requested_mask="::r" denied_mask="::r" fsuid=112 name="/proc/5052/net/if_inet6" pid=5054 profile="/usr/sbin/named"
[43271.297555] wifi0: rx FIFO overrun; resetting
[46511.676315] wifi0: rx FIFO overrun; resetting
[46842.299552] type=1503 audit(1228451128.078:23): operation="inode_permission" requested_mask="::r" denied_mask="::r" fsuid=112 name="/proc/5052/net/if_inet6" pid=5053 profile="/usr/sbin/named"