LJ m1120n MFP: One A4 test page is printed on 2 A4 sheets

the problem is very similar to this one #21749 (https://answers.launchpad.net/hplip/+question/21749)
I have to install HPLIP 2.8.10 to support this LJ m1120n MFP. It recognizes the printer.
The problem is when I tried to print "HP Printer Test Page" or CUPS's "Printer Test Page" the page is printed, but right after this page the printer throws out another page, the second page contains a narrow black line at the page top. It seems that this line is a part of the black border of the test page and this few pixels of the test page does not feet the printing area or so...
If I print the A4 PDF document the blank page comes after each printed page exactly as described in #21749.

I use Fedora 10

My hp-check -t output:

hp-check[3640]: info: :
Initializing. Please wait...
Fedora

10

scheduler is running

Linux localhost.localdomain 2.6.27.7-134.fc10.i686 #1 SMP Mon Dec 1 22:42:50 EST 2008 i686 i686 i386 GNU/Linux

warning: Invalid ppd_dir value: None
hp-check[3640]: info: :
hp-check[3640]: info: :---------------
hp-check[3640]: info: :| SYSTEM INFO |
hp-check[3640]: info: :---------------
hp-check[3640]: info: :
hp-check[3640]: info: :Basic system information:
hp-check[3640]: info: :Linux localhost.localdomain 2.6.27.7-134.fc10.i686 #1 SMP Mon Dec 1 22:42:50 EST 2008 i686 i686 i386 GNU/Linux

hp-check[3640]: info: :
hp-check[3640]: info: :Distribution:
hp-check[3640]: info: :fedora 10
hp-check[3640]: info: :
HPOJ running?
hp-check[3640]: info: :No, HPOJ is not running (OK).
hp-check[3640]: info: :
hp-check[3640]: info: :Checking Python version...
hp-check[3640]: info: :OK, version 2.5.2 installed
hp-check[3640]: info: :
hp-check[3640]: info: :Checking PyQt 3.x version...
hp-check[3640]: info: :OK, version 3.17 installed.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking PyQt 4.x version...
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for CUPS...
hp-check[3640]: info: :Status: scheduler is running
error: Version: (Not available. CUPS may not be installed or not running.)
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dbus/python-dbus...
hp-check[3640]: info: :dbus daemon is running.
hp-check[3640]: info: :python-dbus version: 0.83.0
hp-check[3640]: info: :
hp-check[3640]: info: :
hp-check[3640]: info: :------------------------------------
hp-check[3640]: info: :| COMPILE AND RUNTIME DEPENDENCIES |
hp-check[3640]: info: :------------------------------------
hp-check[3640]: info: :
note: To check for compile-time only dependencies, re-run hp-check with the -c parameter (ie, hp-check -c).
note: To check for run-time only dependencies, re-run hp-check with the -r parameter (ie, hp-check -r).
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: cups - Common Unix Printing System...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: cups-ddk - CUPS driver development kit...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: cups-devel- Common Unix Printing System development files...
error: NOT FOUND! This is a REQUIRED/COMPILE TIME ONLY dependency. Please make sure that this dependency is installed before installing or running HPLIP.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: dbus - Message bus system...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: gcc - GNU Project C and C++ Compiler...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: GhostScript - PostScript and PDF language interpreter and previewer...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: libcrypto - OpenSSL cryptographic library...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: libjpeg - JPEG library...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: libnetsnmp-devel - SNMP networking library development files...
error: NOT FOUND! This is a REQUIRED dependency. Please make sure that this dependency is installed before installing or running HPLIP.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: libpthread - POSIX threads library...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: libtool - Library building support services...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: libusb - USB library...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: make - GNU make utility to maintain groups of programs...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: PIL - Python Imaging Library (required for commandline scanning with hp-scan)...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: ppdev - Parallel port support kernel module....
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: PyQt 3- Qt interface for Python (for Qt version 3.x)...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: PyQt 4- Qt interface for Python (for Qt version 4.x)...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: python-ctypes - A foreign function library for Python...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: python-dbus - Python bindings for dbus...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: python-devel - Python development files...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: Python XML libraries...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: Python 2.3 or greater - Required for fax functionality...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: Python 2.2 or greater - Python programming language...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: Reportlab - PDF library for Python...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: SANE - Scanning library...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: SANE - Scanning library development files...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: scanimage - Shell scanning program...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for dependency: xsane - Graphical scanner frontend for SANE...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :
hp-check[3640]: info: :----------------------
hp-check[3640]: info: :| HPLIP INSTALLATION |
hp-check[3640]: info: :----------------------
hp-check[3640]: info: :
hp-check[3640]: info: :
hp-check[3640]: info: :Currently installed HPLIP version...
hp-check[3640]: info: :HPLIP 2.8.10 currently installed in '/usr/share/hplip'.
hp-check[3640]: info: :
hp-check[3640]: info: :Current contents of '/etc/hp/hplip.conf' file:
hp-check[3640]: info: :[dirs]
run = /var/run
cupsbackend = /usr/lib/cups/backend
ppd = /usr/share/ppd/HP
doc = /usr/share/doc/hplip-2.8.10
drv = /usr/share/cups/drv/hp
ppdbase = /usr/share/ppd
home = /usr/share/hplip
cupsfilter = /usr/lib/cups/filter
icon = /usr/share/applications

[hplip]
version = 2.8.10
plugin = 1

[configure]
foomatic-rip-hplip-install = no
foomatic-ppd-install = no
doc-build = yes
cups11-build = no
gui-build = yes
internal-tag = 2.8.10.33
foomatic-drv-install = yes
pp-build = yes
ui-toolkit = qt3
scanner-build = yes
network-build = yes
restricted-build = no
dbus-build = yes
shadow-build = no
fax-build = yes

hp-check[3640]: info: :
hp-check[3640]: info: :Current contents of '~/.hplip/hplip.conf' file:
error: Could not access file: No such file or directory
hp-check[3640]: info: :
hp-check[3640]: info: :-------------------------------
hp-check[3640]: info: :| DISCOVERED PARALLEL DEVICES |
hp-check[3640]: info: :-------------------------------
hp-check[3640]: info: :
hp-check[3640]: info: :No devices found.
hp-check[3640]: info: :
hp-check[3640]: info: :--------------------------
hp-check[3640]: info: :| DISCOVERED USB DEVICES |
hp-check[3640]: info: :--------------------------
hp-check[3640]: info: :
hp-check[3640]: info: : Device URI Model
hp-check[3640]: info: : -------------------------------- ----------------------
hp-check[3640]: info: : hp:/usb/HP_LaserJet_M1120n_MFP?s HP LaserJet M1120n MFP
  erial=MN20MX1
hp-check[3640]: info: :
hp-check[3640]: info: :---------------------------------
hp-check[3640]: info: :| INSTALLED CUPS PRINTER QUEUES |
hp-check[3640]: info: :---------------------------------
hp-check[3640]: info: :
hp-check[3640]: info: :
hp-check[3640]: info: :M1120n_MFP
hp-check[3640]: info: :----------
hp-check[3640]: info: :Type: Printer
hp-check[3640]: info: :Installed in HPLIP?: Yes, using the hp: CUPS backend.
hp-check[3640]: info: :Device URI: hp:/usb/HP_LaserJet_M1120n_MFP?serial=MN20MX1
hp-check[3640]: info: :PPD: /etc/cups/ppd/M1120n_MFP.ppd
hp-check[3640]: info: :PPD Description: HP LaserJet M1120n Foomatic/hpijs-ZJS (recommended)
hp-check[3640]: info: :Printer status: printer M1120n_MFP is idle. enabled since Sat 20 Dec 2008 11:43:28 AM EET

error: Required plug-in status: Not installed
hp-check[3640]: info: :Communication status: Good
hp-check[3640]: info: :
hp-check[3640]: info: :
hp-check[3640]: info: :----------------------
hp-check[3640]: info: :| SANE CONFIGURATION |
hp-check[3640]: info: :----------------------
hp-check[3640]: info: :
hp-check[3640]: info: :'hpaio' in '/etc/sane.d/dll.conf'...
hp-check[3640]: info: :OK, found. SANE backend 'hpaio' is properly set up.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking output of 'scanimage -L'...
hp-check[3640]: info: :device `hpaio:/usb/HP_LaserJet_M1120n_MFP?serial=MN20MX1' is a Hewlett-Packard HP_LaserJet_M1120n_MFP all-in-one

device `hpljm1005:libusb:001:003' is a Hewlett-Packard LaserJet M1120n multi-function peripheral

hp-check[3640]: info: :
hp-check[3640]: info: :---------------------
hp-check[3640]: info: :| PYTHON EXTENSIONS |
hp-check[3640]: info: :---------------------
hp-check[3640]: info: :
hp-check[3640]: info: :Checking 'cupsext' CUPS extension...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking 'pcardext' Photocard extension...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking 'hpmudext' I/O extension...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :Checking 'scanext' SANE scanning extension...
hp-check[3640]: info: :OK, found.
hp-check[3640]: info: :
hp-check[3640]: info: :
hp-check[3640]: info: :-----------------
hp-check[3640]: info: :| USB I/O SETUP |
hp-check[3640]: info: :-----------------
hp-check[3640]: info: :
hp-check[3640]: info: :
hp-check[3640]: info: :Checking for permissions of USB attached printers...
hp-check[3640]: info: :
HP Device 0x5717 at 001:003:
hp-check[3640]: info: : Device URI: hp:/usb/HP_LaserJet_M1120n_MFP?serial=MN20MX1
hp-check[3640]: info: : Device node: /dev/bus/usb/001/003
hp-check[3640]: info: : Mode: 0664
hp-check[3640]: info: :getfacl: Removing leading '/' from absolute path names

# file: dev/bus/usb/001/003

# owner: root

# group: root

user::rw-

user:alex:rw-

group::r--

group:lp:rw-

mask::rw-

other::r--

hp-check[3640]: info: :
hp-check[3640]: info: :-----------
hp-check[3640]: info: :| SUMMARY |
hp-check[3640]: info: :-----------
hp-check[3640]: info: :
error: 4 errors and/or warnings.
hp-check[3640]: info: :
hp-check[3640]: info: :Please refer to the installation instructions at:
hp-check[3640]: info: :http://hplip.sourceforge.net/install/index.html

hp-check[3640]: info: :
hp-check[3640]: info: :Done.