I get this oops on boot, while the /etc/rc.d/init.d/bluetooth scripts 
are running:

Bluetooth: Core ver 2.8
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
c027a5d5
*pde = 00000000
Oops: 0000 [#1]
4K_STACKS SMP
last sysfs file: /devices/pci0000:00/0000:00:1e.0/0000:15:00.1/fw-host0/000a27000401f4a2/000a2
7000401f4a2-0/version
Modules linked in: bluetooth sunrpc ip_conntrack_netbios_ns ipt_REJECT xt_state ip_conntrack n
fnetlink xt_tcpudp iptable_filter ip_tables x_tables vfat fat dm_mirror dm_mod video ibm_acpi
button battery ac parport_pc lp parport nvram raw1394 video1394 snd_hda_intel snd_hda_codec sn
d_seq_dummy mmc_block snd_seq_oss snd_seq_midi_event wlan_scan_sta snd_seq snd_seq_device snd_
pcm_oss snd_mixer_oss snd_pcm snd_timer sdhci sg ohci1394 ieee1394 ehci_hcd snd mmc_core ath_p
ci ath_rate_sample e1000 i2c_i801 soundcore snd_page_alloc wlan ath_hal uhci_hcd piix pcspkr i
2c_core generic ext3 jbd ahci libata sd_mod scsi_mod
CPU:    0
EIP:    0060:[<c027a5d5>]    Tainted: P      VLI
EFLAGS: 00210287   (2.6.17-mm1 #40)
EIP is at usbdev_open+0xaf/0x1a3
eax: 0bd00200   ebx: 00000000   ecx: fffffe78   edx: f757c388
esi: f64d1b40   edi: f7fb9ac0   ebp: 00000200   esp: f75e3ed8
ds: 007b   es: 007b   ss: 0068
Process hid2hci (pid: 2140, ti=f75e3000 task=f70a65a0 task.ti=f75e3000)
Stack: f7092b00 f7014bf0 00000000 c03d0e00 f7014bf0 f7092b00 c016d7eb 00000200
       f7092b00 f7014bf0 00000000 c016d6e7 c0164314 c20fe140 f750fe08 f7092b00
       00000002 f75e3f40 00000004 c0164472 f7092b00 00000000 00000001 c01644b3
Call Trace:
 [<c016d7eb>] chrdev_open+0x104/0x148
 [<c016d6e7>] chrdev_open+0x0/0x148
 [<c0164314>] __dentry_open+0xc7/0x1ab
 [<c0164472>] nameidata_to_filp+0x24/0x33
 [<c01644b3>] do_filp_open+0x32/0x39
 [<c0123eda>] current_fs_time+0x4f/0x59
 [<c0164243>] get_unused_fd+0xb9/0xc3
 [<c01644fc>] do_sys_open+0x42/0xbe
 [<c01645b1>] sys_open+0x1c/0x1e
 [<c030052d>] sysenter_past_esp+0x56/0x79
 [<c030007b>] __down_interruptible+0x63/0x12e
Code: 00 00 8b 3d ac ba 4a c0 8b 8f 9c 00 00 00 81 e9 88 01 00 00 eb 15 89 e8 0d 00 00 d0 0b 3
9 81 94 01 00 00 74 85 8d 8b 78 fe ff ff <8b> 99 88 01 00 00 0f 18 03 90 8d 91 88 01 00 00 8d
87 9c 00 00
EIP: [<c027a5d5>] usbdev_open+0xaf/0x1a3 SS:ESP 0068:f75e3ed8
 <6>Bluetooth: L2CAP ver 2.8
Bluetooth: L2CAP socket layer initialized
Bluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM TTY layer initialized
Bluetooth: RFCOMM ver 1.7
Bluetooth: HIDP (Human Interface Emulation) ver 1.1

There's no bluetooth device actually visible on the USB bus at this point.

dmesg and config attached.

    J