On my Thinkpad X60, I get an oops when I press the eject button on the 
attached Ultrabase dock:

ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec31e0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3380] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3360] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3340] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3320] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3300] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec32e0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec32c0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec32a0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3280] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3260] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3240] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3220] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3200] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3e60] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ed3fe0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ed3fc0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ed3fa0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ed3f80] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec7ac0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3380] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3360] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3340] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3320] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3300] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec32e0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec32c0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec32a0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3280] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3260] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3240] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3220] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3200] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ec3e60] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ed3fe0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ed3fc0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ed3fa0] [20060310]
ACPI Exception (acpi_bus-0070): AE_NOT_FOUND, No context for object [f7ed3f80] [20060310]
BUG: unable to handle kernel paging request at virtual address 00200200
 printing eip:
c02288cc
*pde = 306b0001
Oops: 0000 [#1]
SMP
last sysfs file: /devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
Modules linked in: ppdev e1000 uhci_hcd wlan_wep i915 drm cpufreq_conservative ipv6 autofs4 hidp rfcomm l2cap bluetooth sunrpc ip_conntrack_netbios_ns ipt_REJECT xt_state ip_conntrack nfnetlink xt_tcpudp iptable_filter ip_tables x_tables vfat fat dm_mirror dm_mod video sony_acpi ibm_acpi button battery asus_acpi ac lp parport_pc parport nvram snd_hda_intel snd_hda_codec snd_seq_dummy snd_seq_oss snd_seq_midi_event wlan_scan_sta snd_seq snd_seq_device ath_pci ath_rate_sample mmc_block snd_pcm_oss wlan ohci1394 sdhci snd_mixer_oss ieee1394 sg ath_hal snd_pcm snd_timer mmc_core ehci_hcd snd soundcore snd_page_alloc i2c_i801 i2c_core pcspkr ext3 jbd ahci libata sd_mod scsi_mod
CPU:    0
EIP:    0060:[<c02288cc>]    Tainted: P      VLI
EFLAGS: 00010286   (2.6.17-rc5-mm3 #19)
EIP is at acpi_device_unregister+0x19/0xe0
eax: eff185f0   ebx: f7f55400   ecx: f7f55410   edx: 00200200
esi: 00000001   edi: 00000000   ebp: 00000001   esp: ef9e9f34
ds: 007b   es: 007b   ss: 0068
Process kacpid_notify (pid: 4374, threadinfo=ef9e9000 task=eff185f0)
Stack: f7f55400 c0228a36 f7f55400 f7fa4400 c0228aa1 ef9e9f50 0000000e f7ec33a0
       f7ec1420 f7f55400 f7e9bdc0 00000003 f7e9cfc0 f7e9cfdc c0222069 00000003
       f7f55400 f7e9cfc0 00000003 f7fbed48 c0207f55 c0222194 c2401880 6ba75400
Call Trace:
 [<c0228a36>] acpi_bus_remove+0xa3/0xa8
 [<c0228aa1>] acpi_bus_trim+0x66/0xc9
 [<c0222069>] hotplug_dock_devices+0x6d/0x91
 [<c0207f55>] acpi_os_execute_thread+0x0/0x1a
 [<c0222194>] dock_notify+0xd2/0x15d
 [<c021fd15>] acpi_bus_notify+0x17/0x46
 [<c020d35a>] acpi_ev_notify_dispatch+0x4c/0x55
 [<c0207f61>] acpi_os_execute_thread+0xc/0x1a
 [<c01359e1>] kthread+0x9d/0xc9
 [<c0135944>] kthread+0x0/0xc9
 [<c0102005>] kernel_thread_helper+0x5/0xb
Code: c0 89 1b 89 5b 04 5b 5e 5f e9 e1 cc 0e 00 5b 5e 5f c3 53 89 c3 b8 e0 a5 3e c0 e8 da cc 0e 00 83 7b 04 00 74 35 8d 4b 10 8b 51 04 <39> 0a 74 08 0f 0b a0 00 84 d4 32 c0 8b 43 10 39 48 04 74 08 0f
EIP: [<c02288cc>] acpi_device_unregister+0x19/0xe0 SS:ESP 0068:ef9e9f34

.config, dmesg and lspci attached.  Need anything else? DSDT?

    J