/dev/lp0 not found

With 2.6.35-24-generic-pae my /dev/lp0 is not found.
With 2.6.35-23-generic-pae my /dev/lp0 IS found

With 2.6.35-24-generic-pae reports:
[ 16.582252] parport_pc 00:0a: reported by Plug and Play ACPI
[ 16.583259] parport_pc 00:0a: disabled

With 2.6.35-23-generic-pae reports:
[ 15.971049] parport_pc 00:0a: activated
[ 15.971055] parport_pc 00:0a: reported by Plug and Play ACPI
[ 15.971126] parport0: PC-style at 0x3bc (0x7bc), irq 7, dma 1 [PCSPP,TRISTATE,COMPAT,ECP,DMA]
[ 15.982699] ppdev: user-space parallel port driver
[ 15.996581] parport0: Printer, Hewlett-Packard HP LaserJet 1100
[ 15.996741] lp0: using parport0 (interrupt-driven).

According to the BIOS config, the port is enabled as ECP

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-24-generic-pae 2.6.35-24.42 [modified: lib/modules/2.6.35-24-generic-pae/kernel/drivers/staging/udlfb/udlfb.ko]
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-23.41-generic-pae 2.6.35.7
Uname: Linux 2.6.35-23-generic-pae i686
NonfreeKernelModules: fglrx wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC2: sam 2669 F.... pulseaudio
 /dev/snd/controlC0: sam 2669 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xd6500000 irq 16'
   Mixer name : 'Analog Devices AD1984A'
   Components : 'HDA:11d4194a,103c30ee,00100400 HDA:11c11040,103c1378,00100200'
   Controls : 18
   Simple ctrls : 11
Card1.Amixer.info:
 Card hw:1 'default'/'Microsoft Microsoft Digital Sound System at usb-0000:00:12.1-2, full speed'
   Mixer name : 'USB Mixer'
   Components : 'USB045e:0014'
   Controls : 7
   Simple ctrls : 6
Card2.Amixer.info:
 Card hw:2 'Device'/'C-Media Electronics Inc. USB PnP Sound Device at usb-0000:00:12.2-1.1.2, full s'
   Mixer name : 'USB Mixer'
   Components : 'USB0d8c:010f'
   Controls : 12
   Simple ctrls : 5
Date: Thu Dec 9 09:12:12 2010
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Release Candidate i386 (20100419.1)
MachineType: Hewlett-Packard HP Compaq 6735b
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-23-generic-pae root=UUID=bb917149-8ff8-4c77-bf96-afadb66c8b05 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
dmi.bios.date: 06/08/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68GTT Ver. F.14
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 30E3
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 96.26
dmi.chassis.asset.tag: CNU84119T9
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68GTTVer.F.14:bd06/08/2010:svnHewlett-Packard:pnHPCompaq6735b:pvrF.14:rvnHewlett-Packard:rn30E3:rvrKBCVersion96.26:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq 6735b
dmi.product.version: F.14
dmi.sys.vendor: Hewlett-Packard