still problematic with stefan bader's ppa's 2.6.31-16.51~pre2.
while the wifi disconnects and the led goes dark, kernel log still displays a stack trace.
watching this on a console (tty1-7) produced a stacktrace for every keypress and eventually locked up.
being in X did not look up, but i decided to reboot almost immediately nevertheless.

Nov 16 11:14:17 eeepc1000h kernel: [   80.793162] pciehp 0000:00:1c.3:pcie04: Card not present on Slot(0-2)
Nov 16 11:14:17 eeepc1000h kernel: [   80.793296] ------------[ cut here ]------------
Nov 16 11:14:17 eeepc1000h kernel: [   80.793322] WARNING: at /build/buildd/linux-2.6.31/fs/sysfs/group.c:138 sysfs_remove_group+0xbe/0xc0()
Nov 16 11:14:17 eeepc1000h kernel: [   80.793334] Hardware name: 1000H
Nov 16 11:14:17 eeepc1000h kernel: [   80.793343] sysfs group c076b720 not found for kobject '0000:01:00.0'
Nov 16 11:14:17 eeepc1000h kernel: [   80.793352] Modules linked in: binfmt_misc snd_hda_codec_realtek snd_hda_intel snd_hda_codec i2c_dev i2c_i801 snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event joydev snd_seq snd_timer snd_seq_device iptable_filter snd uvcvideo ppdev ip_tables soundcore videodev psmouse lp snd_page_alloc x_tables rt2860sta(C) v4l1_compat eeepc_laptop serio_raw parport fbcon tileblit font bitblit softcursor atl1e i915 drm i2c_algo_bit intel_agp agpgart video output
Nov 16 11:14:17 eeepc1000h kernel: [   80.793474] Pid: 41, comm: pciehpd Tainted: G         C 2.6.31-16-generic #51~pre2-Ubuntu
Nov 16 11:14:17 eeepc1000h kernel: [   80.793480] Call Trace:
Nov 16 11:14:17 eeepc1000h kernel: [   80.793493]  [<c01450fd>] warn_slowpath_common+0x6d/0xa0
Nov 16 11:14:17 eeepc1000h kernel: [   80.793501]  [<c023c4be>] ? sysfs_remove_group+0xbe/0xc0
Nov 16 11:14:17 eeepc1000h kernel: [   80.793508]  [<c023c4be>] ? sysfs_remove_group+0xbe/0xc0
Nov 16 11:14:17 eeepc1000h kernel: [   80.793517]  [<c0145176>] warn_slowpath_fmt+0x26/0x30
Nov 16 11:14:17 eeepc1000h kernel: [   80.793524]  [<c023c4be>] sysfs_remove_group+0xbe/0xc0
Nov 16 11:14:17 eeepc1000h kernel: [   80.793534]  [<c03a6220>] dpm_sysfs_remove+0x10/0x20
Nov 16 11:14:17 eeepc1000h kernel: [   80.793543]  [<c03a0691>] device_del+0x31/0x150
Nov 16 11:14:17 eeepc1000h kernel: [   80.793551]  [<c03a07bb>] device_unregister+0xb/0x20
Nov 16 11:14:17 eeepc1000h kernel: [   80.793559]  [<c032445e>] pci_stop_bus_device+0x4e/0x60
Nov 16 11:14:17 eeepc1000h kernel: [   80.793567]  [<c0324574>] pci_remove_bus_device+0x14/0x50
Nov 16 11:14:17 eeepc1000h kernel: [   80.793577]  [<c03342cf>] pciehp_unconfigure_device+0x8f/0x1c0
Nov 16 11:14:17 eeepc1000h kernel: [   80.793586]  [<c0332d99>] remove_board+0x19/0xf0
Nov 16 11:14:17 eeepc1000h kernel: [   80.793594]  [<c0333676>] pciehp_disable_slot+0x56/0x190
Nov 16 11:14:17 eeepc1000h kernel: [   80.793603]  [<c0333b08>] pciehp_power_thread+0x88/0x100
Nov 16 11:14:17 eeepc1000h kernel: [   80.793610]  [<c0138007>] ? finish_task_switch+0x57/0xe0
Nov 16 11:14:17 eeepc1000h kernel: [   80.793619]  [<c056ee6c>] ? schedule+0x40c/0x730
Nov 16 11:14:17 eeepc1000h kernel: [   80.793628]  [<c01579ce>] run_workqueue+0x6e/0x140
Nov 16 11:14:17 eeepc1000h kernel: [   80.793636]  [<c0333a80>] ? pciehp_power_thread+0x0/0x100
Nov 16 11:14:17 eeepc1000h kernel: [   80.793644]  [<c0157b28>] worker_thread+0x88/0xe0
Nov 16 11:14:17 eeepc1000h kernel: [   80.793653]  [<c015c170>] ? autoremove_wake_function+0x0/0x40
Nov 16 11:14:17 eeepc1000h kernel: [   80.793661]  [<c0157aa0>] ? worker_thread+0x0/0xe0
Nov 16 11:14:17 eeepc1000h kernel: [   80.793668]  [<c015be7c>] kthread+0x7c/0x90
Nov 16 11:14:17 eeepc1000h kernel: [   80.793675]  [<c015be00>] ? kthread+0x0/0x90
Nov 16 11:14:17 eeepc1000h kernel: [   80.793684]  [<c0104007>] kernel_thread_helper+0x7/0x10
Nov 16 11:14:17 eeepc1000h kernel: [   80.793689] ---[ end trace ff474051a9831bf3 ]---
Nov 16 11:14:17 eeepc1000h kernel: [   80.793708] BUG: unable to handle kernel NULL pointer dereference at 00000010
Nov 16 11:14:17 eeepc1000h kernel: [   80.793813] IP: [<c055e768>] klist_put+0x18/0x80
Nov 16 11:14:17 eeepc1000h kernel: [   80.793878] *pde = 00000000
Nov 16 11:14:17 eeepc1000h kernel: [   80.793920] Oops: 0000 [#1] SMP
Nov 16 11:14:17 eeepc1000h kernel: [   80.793972] last sysfs file: /sys/devices/platform/eeepc/rfkill/rfkill0/uevent
Nov 16 11:14:17 eeepc1000h kernel: [   80.794053] Modules linked in: binfmt_misc snd_hda_codec_realtek snd_hda_intel snd_hda_codec i2c_dev i2c_i801 snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event joydev snd_seq snd_timer snd_seq_device iptable_filter snd uvcvideo ppdev ip_tables soundcore videodev psmouse lp snd_page_alloc x_tables rt2860sta(C) v4l1_compat eeepc_laptop serio_raw parport fbcon tileblit font bitblit softcursor atl1e i915 drm i2c_algo_bit intel_agp agpgart video output
Nov 16 11:14:17 eeepc1000h kernel: [   80.794837]
Nov 16 11:14:17 eeepc1000h kernel: [   80.794862] Pid: 41, comm: pciehpd Tainted: G        WC (2.6.31-16-generic #51~pre2-Ubuntu) 1000H
Nov 16 11:14:17 eeepc1000h kernel: [   80.794960] EIP: 0060:[<c055e768>] EFLAGS: 00010246 CPU: 0
Nov 16 11:14:17 eeepc1000h kernel: [   80.795025] EIP is at klist_put+0x18/0x80
Nov 16 11:14:17 eeepc1000h kernel: [   80.795073] EAX: 00000000 EBX: f70d2494 ECX: fffff63d EDX: 00000001
Nov 16 11:14:17 eeepc1000h kernel: [   80.795144] ESI: 00000000 EDI: f7103058 EBP: f684be30 ESP: f684be20
Nov 16 11:14:17 eeepc1000h kernel: [   80.795215]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Nov 16 11:14:17 eeepc1000h kernel: [   80.795278] Process pciehpd (pid: 41, ti=f684a000 task=f68225b0 task.ti=f684a000)
Nov 16 11:14:17 eeepc1000h kernel: [   80.795360] Stack:
Nov 16 11:14:17 eeepc1000h kernel: [   80.795387]  f70ce200 f7108058 00000000 f7103058 f684be38 c055e7fd f684be4c c03a06a0
Nov 16 11:14:17 eeepc1000h kernel: [   80.795517] <0> f7108058 00000000 f7108000 f684be58 c03a07bb f7108000 f684be6c c032445e
Nov 16 11:14:17 eeepc1000h kernel: [   80.795661] <0> f7108000 00000000 f727bd80 f684be7c c0324574 f7108000 00000000 f684bec0
Nov 16 11:14:17 eeepc1000h kernel: [   80.795810] Call Trace:
Nov 16 11:14:17 eeepc1000h kernel: [   80.795846]  [<c055e7fd>] ? klist_del+0xd/0x10
Nov 16 11:14:17 eeepc1000h kernel: [   80.795901]  [<c03a06a0>] ? device_del+0x40/0x150
Nov 16 11:14:17 eeepc1000h kernel: [   80.795959]  [<c03a07bb>] ? device_unregister+0xb/0x20
Nov 16 11:14:17 eeepc1000h kernel: [   80.796021]  [<c032445e>] ? pci_stop_bus_device+0x4e/0x60
Nov 16 11:14:17 eeepc1000h kernel: [   80.796086]  [<c0324574>] ? pci_remove_bus_device+0x14/0x50
Nov 16 11:14:17 eeepc1000h kernel: [   80.796153]  [<c03342cf>] ? pciehp_unconfigure_device+0x8f/0x1c0
Nov 16 11:14:17 eeepc1000h kernel: [   80.796225]  [<c0332d99>] ? remove_board+0x19/0xf0
Nov 16 11:14:17 eeepc1000h kernel: [   80.796284]  [<c0333676>] ? pciehp_disable_slot+0x56/0x190
Nov 16 11:14:17 eeepc1000h kernel: [   80.796351]  [<c0333b08>] ? pciehp_power_thread+0x88/0x100
Nov 16 11:14:17 eeepc1000h kernel: [   80.796416]  [<c0138007>] ? finish_task_switch+0x57/0xe0
Nov 16 11:14:17 eeepc1000h kernel: [   80.796479]  [<c056ee6c>] ? schedule+0x40c/0x730
Nov 16 11:14:17 eeepc1000h kernel: [   80.796537]  [<c01579ce>] ? run_workqueue+0x6e/0x140
Nov 16 11:14:17 eeepc1000h kernel: [   80.796598]  [<c0333a80>] ? pciehp_power_thread+0x0/0x100
Nov 16 11:14:17 eeepc1000h kernel: [   80.796663]  [<c0157b28>] ? worker_thread+0x88/0xe0
Nov 16 11:14:17 eeepc1000h kernel: [   80.796723]  [<c015c170>] ? autoremove_wake_function+0x0/0x40
Nov 16 11:14:17 eeepc1000h kernel: [   80.796791]  [<c0157aa0>] ? worker_thread+0x0/0xe0
Nov 16 11:14:17 eeepc1000h kernel: [   80.796849]  [<c015be7c>] ? kthread+0x7c/0x90
Nov 16 11:14:17 eeepc1000h kernel: [   80.796903]  [<c015be00>] ? kthread+0x0/0x90
Nov 16 11:14:17 eeepc1000h kernel: [   80.796956]  [<c0104007>] ? kernel_thread_helper+0x7/0x10
Nov 16 11:14:17 eeepc1000h kernel: [   80.797017] Code: 3f 00 00 00 b8 d8 fd 70 c0 e8 e5 69 be ff 5d c3 8d 76 00 55 89 e5 83 ec 10 89 5d f4 89 c3 89 75 f8 89 7d fc 8b 30 83 e6 fe 89 f0 <8b> 7e 10 88 55 f0 e8 2d 26 01 00 0f b6 55 f0 84 d2 74 0b 8b 03
Nov 16 11:14:17 eeepc1000h kernel: [   80.797251] EIP: [<c055e768>] klist_put+0x18/0x80 SS:ESP 0068:f684be20
Nov 16 11:14:17 eeepc1000h kernel: [   80.797251] CR2: 0000000000000010
Nov 16 11:14:17 eeepc1000h kernel: [   80.797795] ---[ end trace ff474051a9831bf4 ]---