Unable to update/upgrade Fedora-16 due to yum Transaction error

[Kaushik Guha]

Dear Friends,


      While upgrading through "Yumex" ,everything is running well,except a
problem is occurring while upgrading packages.

The following is a snapshot of my system:
19:43:01 : network interface p2p1 (via-rhine) is connected
19:43:02 : Connected to an network
19:43:02 : network interface p2p1 (via-rhine) is connected
19:43:02 : Starting yum child process
19:43:26 : YUM: Yum Version : 3.4.3
19:43:27 : YUM: Loaded plugins: auto-update-debuginfo, dellsysid,
etckeeper, fastestmirror, fs-
19:43:29 : Getting available updates
19:43:29 : YUM: Loading mirror speeds from cached hostfile
19:43:29 : YUM:  * fedora: mirror.cse.iitk.ac.in
19:43:29 : YUM:  * rpmfusion-free: mirror.cse.iitk.ac.in
19:43:29 : YUM:  * rpmfusion-free-debuginfo: mirror.yandex.ru
19:43:29 : YUM:  * rpmfusion-free-rawhide-source: mirror.yandex.ru
19:43:29 : YUM:  * rpmfusion-free-updates: mirror.cse.iitk.ac.in
19:43:29 : YUM:  * rpmfusion-free-updates-testing: mirror.yandex.ru
19:43:29 : YUM:  * rpmfusion-nonfree: mirror.cse.iitk.ac.in
19:43:29 : YUM:  * rpmfusion-nonfree-source: mirror.yandex.ru
19:43:29 : YUM:  * rpmfusion-nonfree-updates: mirror.cse.iitk.ac.in
19:43:29 : YUM:  * rpmfusion-nonfree-updates-source: mirror.yandex.ru
19:43:29 : YUM:  * rpmfusion-nonfree-updates-testing: mirror.yandex.ru
19:43:29 : YUM:  * rpmfusion-nonfree-updates-testing-source:
mirror.yandex.ru
19:43:29 : YUM:  * updates: mirror.cse.iitk.ac.in
19:43:29 : YUM:  * updates-source: ftp.kddilabs.jp
19:43:29 : YUM:  * updates-testing: ftp.kddilabs.jp
19:43:29 : YUM:  * updates-testing-source: ftp.kddilabs.jp
19:43:29 : Downloaded : repomd_XiuAjtmp.xml ( 0  )
19:43:31 : YUM: 0 packages excluded due to repository protections
19:43:34 : 227 packages returned
19:43:34 : Getting available obsoletes
19:43:34 : 1 packages returned
19:43:34 : Adding Packages to view
19:43:35 : Added 228 Packages to view
19:46:14 : YUM: --> Running transaction check
19:46:14 : YUM: ---> Package BackupPC.x86_64 0:3.2.1-6.fc16 will be updated
19:46:15 : YUM: ---> Package BackupPC.x86_64 0:3.2.1-7.fc16 will be an
update
19:46:15 : YUM: ---> Package Coin2.x86_64 0:2.5.0-11.fc16 will be updated
19:46:15 : YUM: ---> Package Coin2.x86_64 0:2.5.0-14.fc16 will be an update
19:46:15 : YUM: ---> Package GraphicsMagick.x86_64 0:1.3.12-6.fc16 will be
updated
19:46:15 : YUM: ---> Package GraphicsMagick.x86_64 0:1.3.13-3.fc16 will be
an update
19:46:15 : YUM: ---> Package GraphicsMagick-c++.x86_64 0:1.3.12-6.fc16 will
be updated
19:46:15 : YUM: ---> Package GraphicsMagick-c++.x86_64 0:1.3.13-3.fc16 will
be an update
19:46:15 : YUM: ---> Package GraphicsMagick-c++-devel.x86_64
0:1.3.12-6.fc16 will be updated
19:46:15 : YUM: ---> Package GraphicsMagick-c++-devel.x86_64
0:1.3.13-3.fc16 will be an update
19:46:15 : YUM: ---> Package GraphicsMagick-devel.x86_64 0:1.3.12-6.fc16
will be updated
19:46:15 : YUM: ---> Package GraphicsMagick-devel.x86_64 0:1.3.13-3.fc16
will be an update
19:46:15 : YUM: ---> Package autocorr-en.noarch 1:3.4.4.2-7.fc16 will be
updated
19:46:15 : YUM: ---> Package autocorr-en.noarch 1:3.4.5.2-1.fc16 will be an
update
19:46:15 : YUM: ---> Package autofs.x86_64 1:5.0.6-4.fc16 will be updated
.
.
.
19:46:30 : YUM: --> Running transaction check
19:46:30 : YUM: ---> Package cuetools.x86_64 0:1.4.0-0.7.svn305.fc16 will
be installed
19:46:30 : YUM: ---> Package libpinyin-data.x86_64 0:0.3.0-2.fc16 will be
installed
19:46:30 : YUM: ---> Package libreplaygain.x86_64 0:0.9.1-0.1.svn453.fc16
will be installed
19:46:30 : YUM: ---> Package libxavs1.x86_64 0:0.1.51-2.fc16 will be
installed
19:46:30 : YUM: --> Finished Dependency Resolution
19:46:30 : YUM: --> Running transaction check
19:46:30 : YUM: ---> Package kernel.x86_64 0:3.1.7-1.fc16 will be erased
19:46:30 : YUM: ---> Package kernel-devel.x86_64 0:3.1.7-1.fc16 will be
erased
19:46:30 : YUM: --> Finished Dependency Resolution
19:46:42 : YUM: Setting up and reading Presto delta metadata
19:46:52 : YUM: warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature,
key ID 8296fa0f: NOKEY
*19:46:52 : ERROR: Error in yum Transaction : Public key for
npapi-vlc-1.2.0-0.3gitf568362.fc17.x86_64.rpm is not installed*
*
*
How to rectify the error in yum Transaction,on the last line.Please Help me.

Thank you all.
From
-kguha
(KAUSHIK  GUHA)
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