Unable to upgrade again,some tools and applications!!!

[Kaushik Guha]

Hello Fedora Friends users community,
I had adjusted and configured my repos.list according to your advice,and
got fruitful results.

*But please see this,and help me out of the problem*:-

[root at localhost ~]# yum upgrade
Loaded plugins: aliases, auto-update-debuginfo, changelog, dellsysid,
downloadonly, etckeeper,
              : fastestmirror, filter-data, fs-snapshot,
fusioninventory-agent, keys, langpacks,
              : list-data, local, merge-conf, post-transaction-actions,
presto, priorities,
              : protectbase, ps, puppetverify, refresh-packagekit,
refresh-updatesd, remove-with-
              : leaves, rpm-warm-cache, security, show-leaves, tmprepo,
tsflags, upgrade-helper,
              : verify, versionlock
Loading mirror speeds from cached hostfile
 * fedora: fedora.iitm.ac.in
 * fedora-debuginfo: ftp.kddilabs.jp
 * fedora-source: ftp.kddilabs.jp
 * rpmfusion-free: mirror.cse.iitk.ac.in
 * rpmfusion-free-debuginfo: mirror.de.leaseweb.net
 * rpmfusion-free-source: mirror.de.leaseweb.net
 * rpmfusion-free-updates: mirror.cse.iitk.ac.in
 * rpmfusion-free-updates-debuginfo: mirror.de.leaseweb.net
 * rpmfusion-free-updates-source: mirror.de.leaseweb.net
 * rpmfusion-nonfree: mirror.cse.iitk.ac.in
 * rpmfusion-nonfree-debuginfo: mirror.de.leaseweb.net
 * rpmfusion-nonfree-source: mirror.de.leaseweb.net
 * rpmfusion-nonfree-updates: mirror.cse.iitk.ac.in
 * rpmfusion-nonfree-updates-debuginfo: mirror.de.leaseweb.net
 * rpmfusion-nonfree-updates-source: mirror.de.leaseweb.net
 * updates: fedora.iitm.ac.in
 * updates-debuginfo: ftp.kddilabs.jp
 * updates-source: ftp.kddilabs.jp
Skipping filters plugin, no data
0 packages excluded due to repository protections
Setting up Upgrade Process
Resolving Dependencies
Skipping filters plugin, no data
--> Running transaction check
---> Package firefox.x86_64 0:9.0.1-1.fc16 will be updated
---> Package firefox.x86_64 0:10.0-1.fc16 will be an update
---> Package gstreamer-plugins-bad-free.x86_64 0:0.10.22-2.fc16.1 will be
updated
---> Package gstreamer-plugins-bad-free.x86_64 0:0.10.22-2.fc16.2 will be
an update
---> Package libvpx.x86_64 0:0.9.7.1-1.fc16 will be updated
--> *Processing Dependency: libvpx.so.0()(64bit) for package:
libavcodec53-0.9-52.fc16.x86_64*
---> Package libvpx.x86_64 0:1.0.0-1.fc16 will be an update
---> Package xulrunner.x86_64 0:9.0.1-1.fc16 will be updated
---> Package xulrunner.x86_64 0:10.0-1.fc16 will be an update
--> Running transaction check
---> Package libvpx.x86_64 0:0.9.7.1-1.fc16 will be updated
---> Package libvpx.x86_64 0:1.0.0-1.fc16 will be an update
--> *Processing Dependency: libvpx.so.1()(64bit) for package:
gstreamer-plugins-bad-free-0.10.22-2.fc16.2.x86_64*
--> *Processing Dependency: libvpx.so.1()(64bit) for package:
xulrunner-10.0-1.fc16.x86_64*
--> Running transaction check
---> Package firefox.x86_64 0:9.0.1-1.fc16 will be updated

*Packages skipped because of dependency problems*:
    firefox-10.0-1.fc16.x86_64 from updates
    gstreamer-plugins-bad-free-0.10.22-2.fc16.2.x86_64 from updates
    libvpx-1.0.0-1.fc16.x86_64 from updates
    xulrunner-10.0-1.fc16.x86_64 from updates
[root at localhost ~]#

What are the dependency problems?
Is it something to do with libvpx.so.0()(64-bit)?
How do I proceed?

-Kaushik Guha
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