SELinux is preventing mixer_applet2 from loading
/usr/lib64/gstreamer-0.10/libgstffmpeg.so which requires text relocation.

Detailed Description:

The mixer_applet2 application attempted to load
/usr/lib64/gstreamer-0.10/libgstffmpeg.so which requires text relocation. This
is a potential security problem. Most libraries do not need this permission.
Libraries are sometimes coded incorrectly and request this permission. The
SELinux Memory Protection Tests
(http://people.redhat.com/drepper/selinux-mem.html) web page explains how to
remove this requirement. You can configure SELinux temporarily to allow
/usr/lib64/gstreamer-0.10/libgstffmpeg.so to use relocation as a workaround,
until the library is fixed. Please file a bug report
(http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package.

Allowing Access:

If you trust /usr/lib64/gstreamer-0.10/libgstffmpeg.so to run correctly, you can
change the file context to textrel_shlib_t. "chcon -t textrel_shlib_t
'/usr/lib64/gstreamer-0.10/libgstffmpeg.so'" You must also change the default
file context files on the system in order to preserve them even on a full
relabel. "semanage fcontext -a -t textrel_shlib_t '/usr/lib64/gstreamer-0.10/libgstffmpeg.so'"

The following command will allow this access:

chcon -t textrel_shlib_t '/usr/lib64/gstreamer-0.10/libgstffmpeg.so'

Additional Information:

Source Context                user_u:system_r:unconfined_t
Target Context                system_u:object_r:lib_t
Target Objects                /usr/lib64/gstreamer-0.10/libgstffmpeg.so [ file ]
Source                        mixer_applet2
Source Path                   /usr/libexec/mixer_applet2
Port                          <Unknown>
Host                          localhost.localdomain
Source RPM Packages           gnome-applets-2.16.0.1-19.el5
Target RPM Packages           gstreamer-ffmpeg-0.10.6-1.el5.rf
Policy RPM                    selinux-policy-2.4.6-255.el5_4.3
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Enforcing
Plugin Name                   allow_execmod
Host Name                     localhost.localdomain
Platform                      Linux localhost.localdomain 2.6.18-164.10.1.el5 #1
                              SMP Thu Jan 7 19:54:26 EST 2010 x86_64 x86_64
Alert Count                   1
First Seen                    fre 15-01-2010 22:39:36 CET
Last Seen                     fre 15-01-2010 22:39:36 CET
Local ID                      b1346351-a6d4-4d45-a638-58a1769e1dfb
Line Numbers                  

Raw Audit Messages            

host=localhost.localdomain type=AVC msg=audit(1263591576.855:17): avc:  denied  { execmod } for  pid=4075 comm="mixer_applet2" path="/usr/lib64/gstreamer-0.10/libgstffmpeg.so" dev=md1 ino=8539950 scontext=user_u:system_r:unconfined_t:s0 tcontext=system_u:object_r:lib_t:s0 tclass=file

host=localhost.localdomain type=SYSCALL msg=audit(1263591576.855:17): arch=c000003e syscall=10 success=no exit=-13 a0=2b4589c43000 a1=499000 a2=5 a3=2b4589c45148 items=0 ppid=4065 pid=4075 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="mixer_applet2" exe="/usr/libexec/mixer_applet2" subj=user_u:system_r:unconfined_t:s0 key=(null)

---------------


# rpm -qi gstreamer-ffmpeg-0.10.6-1.el5.rf
Name        : gstreamer-ffmpeg             Relocations: (not relocatable)
Version     : 0.10.6                            Vendor: Dag Apt Repository, http://dag.wieers.com/apt/
Release     : 1.el5.rf                      Build Date: man 23-11-2009 00:23:17 CET
Install Date: fre 15-01-2010 14:57:23 CET      Build Host: lisse.hasselt.wieers.com
Group       : Applications/Multimedia       Source RPM: gstreamer-ffmpeg-0.10.6-1.el5.rf.src.rpm
Size        : 20711110                         License: LGPL
Signature   : DSA/SHA1, ons 25-11-2009 12:47:25 CET, Key ID a20e52146b8d79e6
Packager    : Dag Wieers <dag@wieers.com>
URL         : http://gstreamer.net/
Summary     : GStreamer streaming media framework FFmpeg-based plugin

--------------

# rpm -qi gnome-applets-2.16.0.1-19.el5
Name        : gnome-applets                Relocations: (not relocatable)
Version     : 2.16.0.1                          Vendor: CentOS
Release     : 19.el5                        Build Date: ons 14-03-2007 16:56:45 CET
Install Date: tor 14-01-2010 20:44:37 CET      Build Host: builder5.centos.org
Group       : User Interface/Desktops       Source RPM: gnome-applets-2.16.0.1-19.el5.src.rpm
Size        : 33105695                         License: GPL
Signature   : DSA/SHA1, ons 04-04-2007 02:23:32 CEST, Key ID a8a447dce8562897
URL         : http://www.gnome.org/
Summary     : Small applications for the GNOME panel

------------

# cat /etc/redhat-release 
CentOS release 5.4 (Final)

# uname -a
Linux localhost.localdomain 2.6.18-164.10.1.el5 #1 SMP Thu Jan 7 19:54:26 EST 2010 x86_64 x86_64 x86_64 GNU/Linux

------------

The "trigger": Centos 5.4 install with Gnome Desktop. (x86_64)
Enable RPMforge
yum -y install  gstreamer-plugins-bad gstreamer-plugins-ugly gstreamer-ffmpeg  

Restart and login as a normal user.