[Bug 349469] Re: debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable

[minhdai]

update-alternatives: using /usr/bin/lupdate-qt4 to provide /usr/bin/lupdate (lupdate) in auto mode.
update-alternatives: using /usr/bin/lrelease-qt4 to provide /usr/bin/lrelease (lrelease) in auto mode.
Setting up qt4-qmake (4:4.8.1-0ubuntu4.1) ...
update-alternatives: using /usr/bin/qmake-qt4 to provide /usr/bin/qmake (qmake) in auto mode.
Setting up libqt4-dev (4:4.8.1-0ubuntu4.1) ...
update-alternatives: using /usr/bin/moc-qt4 to provide /usr/bin/moc (moc) in auto mode.
update-alternatives: using /usr/bin/uic-qt4 to provide /usr/bin/uic (uic) in auto mode.
update-alternatives: warning: skip creation of /usr/share/man/man1/uic.1.gz because associated file /usr/share/man/man1/uic-qt4.1.gz (of link group uic) doesn't exist.
Setting up phonon-backend-null (4:4.7.0really4.6.0-0ubuntu1) ...
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable
dpkg: error processing phonon-backend-null (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of libphonon-dev:
 libphonon-dev depends on phonon-backend-null | phonon; however:
  Package phonon-backend-null is not configured yet.
  Package phonon is not installed.
dpkg: error processing libphonon-dev (--configure):
 dependency problems - leaving unconfigured
Setting up libqt4-opengl-dev (4:4.8.1-0ubuntu4.1) ...
No apport report written because the error message indicates its a followup error from a previous failure.
                          Setting up libqtwebkit-dev (2.2.1-1ubuntu4) ...
Setting up libx11-doc (2:1.4.99.1-0ubuntu2) ...
Setting up libxi-dev (2:1.6.0-0ubuntu2) ...
Setting up x11proto-record-dev (1.14.1-2) ...
Setting up libxtst-dev (2:1.2.0-4) ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
>>>>>>>>>>>>>>>>>>>Errors were encountered while processing:
>>>>>>>>>>>>>>>>>>> man-db
>>>>>>>>>>>>>>>>>>>phonon-backend-null
>>>>>>>>>>>>>>>>>>> libphonon-dev
>>>>>>>>>>>>>>>>>>>E: Sub-process /usr/bin/dpkg returned an error code (1)

what is the error and how to fix it? Please help! :(

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https://bugs.launchpad.net/bugs/349469

Title:
  debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by
  another process: Resource temporarily unavailable

Status in “debconf” package in Ubuntu:
  Triaged

Bug description:
  If you have encountered this bug, please run:

    sudo fuser /var/cache/debconf/config.dat

  for each of the shown process IDs, please run:

    pstree -s $pid

  and report the output to this bug.

  Binary package hint: cups

  Crash detection report attached.

  ProblemType: Package
  Architecture: i386
  DistroRelease: Ubuntu 8.10
  ErrorMessage: subprocess post-installation script returned error exit status 1
  NonfreeKernelModules: nvidia
  Package: cups 1.3.9-2ubuntu8
  SourcePackage: cups
  Title: package cups 1.3.9-2ubuntu8 failed to install/upgrade: subprocess post-installation script returned error exit status 1
  Uname: Linux 2.6.27-11-generic i686

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