Description of problem:

On a fedora11 preview system, with printers never before defined...
If I start system-config-printer and add a printer, a kernel WARNING spews
fourth.  This warning happens right as the system-config-printer 'Select
Device' screen comes up.

I was notified of the warning by a gnome popup window that said
'Your system had a kernel failure'.

Version-Release number of selected component (if applicable):

This is fedora11 preview, but with yum update run a couple times.  Therefore,
it's using newer packages than were on the preview dvd.

Running kernel: 2.6.29.4-167.fc11.x86_64
kernel rpm: kernel-2.6.29.4-167.fc11.x86_64
system-config-printer: system-config-printer-1.1.7-4.fc11.x86_64

/etc/fedora-release:
Fedora release 11 (Leonidas)

How reproducible:
100%
It happens each time I start system-config-printer.  You don't need to
reboot between attempts.

Steps to Reproduce:
1. start system-config-printer
2. click 'New'
3. At this point, the traceback/kernel warning happens.
  
Actual results:

This traceback

Jun  2 11:04:44 hoot dbus-daemon: Rejected send message, 2 matched rules; type="method_call", sender=":1.501" (uid=4 pid=23786 comm="bluetooth ") interface="org.bluez.Manager" member="DefaultAdapter" error name="(unset)" requested_reply=0 destination="org.bluez" (uid=0 pid=1819 comm="/usr/sbin/bluetoothd "))
Jun  2 11:04:45 hoot hp: io/hpmud/pp.c 627: unable to read device-id ret=-1
Jun  2 11:04:45 hoot python: io/hpmud/pp.c 627: unable to read device-id ret=-1
Jun  2 11:04:45 hoot kernel: ------------[ cut here ]------------
Jun  2 11:04:45 hoot kernel: WARNING: at kernel/sysctl.c:2058 unregister_sysctl_table+0xc7/0xfc() (Tainted: G        W )
Jun  2 11:04:45 hoot kernel: Hardware name: OptiPlex 745                 
Jun  2 11:04:45 hoot kernel: Modules linked in: lp nfs lockd nfs_acl auth_rpcgss fuse ipt_MASQUERADE iptable_nat nf_nat bnep sco l2cap bluetooth autofs4 sunrpc bridge stp llc ipv6 cpufreq_ondemand acpi_cpufreq freq_table dm_multipath kvm_intel kvm uinput snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer ppdev snd parport_pc tg3 i2c_i801 soundcore iTCO_wdt parport snd_page_alloc iTCO_vendor_support pcspkr joydev serio_raw dcdbas ata_generic pata_acpi i915 drm i2c_algo_bit i2c_core video output [last unloaded: microcode]
Jun  2 11:04:45 hoot kernel: Pid: 23789, comm: python Tainted: G        W  2.6.29.4-167.fc11.x86_64 #1
Jun  2 11:04:45 hoot kernel: Call Trace:
Jun  2 11:04:45 hoot kernel: [<ffffffff810489bf>] warn_slowpath+0xbc/0xf0
Jun  2 11:04:45 hoot kernel: [<ffffffff8130267a>] ? sock_sendmsg+0xcc/0xe5
Jun  2 11:04:45 hoot kernel: [<ffffffff8105ca4b>] ? autoremove_wake_function+0x0/0x39
Jun  2 11:04:45 hoot kernel: [<ffffffff810e9f94>] ? mntput_no_expire+0x36/0x150
Jun  2 11:04:45 hoot kernel: [<ffffffffa00b43af>] ? parport_release+0xaa/0x164 [parport]
Jun  2 11:04:45 hoot kernel: [<ffffffff8104ffe6>] unregister_sysctl_table+0xc7/0xfc
Jun  2 11:04:45 hoot kernel: [<ffffffff8103a269>] ? __dequeue_entity+0x33/0x38
Jun  2 11:04:45 hoot kernel: [<ffffffffa00b68ad>] parport_device_proc_unregister+0x2d/0x3b [parport]
Jun  2 11:04:45 hoot kernel: [<ffffffffa00b4ad0>] parport_unregister_device+0x14/0x131 [parport]
Jun  2 11:04:45 hoot kernel: [<ffffffffa009d1b1>] pp_release+0x11c/0x14e [ppdev]
Jun  2 11:04:45 hoot kernel: [<ffffffff810d61c4>] __fput+0xf9/0x1a0
Jun  2 11:04:45 hoot kernel: [<ffffffff810d6285>] fput+0x1a/0x1c
Jun  2 11:04:45 hoot kernel: [<ffffffff810d35c5>] filp_close+0x68/0x72
Jun  2 11:04:45 hoot kernel: [<ffffffff810d367b>] sys_close+0xac/0xea
Jun  2 11:04:45 hoot kernel: [<ffffffff8101133a>] system_call_fastpath+0x16/0x1b
Jun  2 11:04:45 hoot kernel: ---[ end trace 40f0281f9ea9607c ]---


Expected results:

Well, not that :)

Additional info:

System is a Dell Optiplex 745

lspci output:

00:00.0 Host bridge: Intel Corporation 82Q963/Q965 Memory Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02)
00:02.1 Display controller: Intel Corporation 82Q963/Q965 Integrated Graphics Controller (rev 02)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 02)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 02)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 02)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 02)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev f2)
00:1f.0 ISA bridge: Intel Corporation 82801HB/HR (ICH8/R) LPC Interface Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801H (ICH8 Family) 4 port SATA IDE Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 02)
00:1f.5 IDE interface: Intel Corporation 82801H (ICH8 Family) 2 port SATA IDE Controller (rev 02)
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5754 Gigabit Ethernet PCI Express (rev 02)