[CentOS] copy/paste centos 6

Thu Aug 16 02:22:12 UTC 2012
Jerry Geis <geisj at pagestation.com>

I had to update all these packages on CentOS 6 for a project.
Everything works great on CentOS 6 - except - Copy/Paste between 
applications.

Anyone - know which application below might control that function?
Example I cannot have firefox running and copy and paste text into 
thunderbird.
Both applications - actually all applications work - I just cant copy/paste.

I'm thinking I did not correctly compile one of the applications below - 
or did not
satisfy a dependency. I am just trying to narrow it down.

Any one have insight into this?

Thanks - Jerry

atk-1.32.0.tar.gz
autoconf-2.68.tar.gz
cairo-1.10.0.tar.gz
dbus-glib-0.92.tar.gz
flex-2.5.35.tar.gz
fontconfig-2.8.0.tar.gz
gdk-pixbuf-2.22.1.tar.gz
gettext-0.18.1.1.tar.gz
glib-2.27.5.tar.gz
gmime-2.5.4.tar.gz
gnome-desktop-2.32.1.tar.bz2
gnome-icon-theme-2.31.0.tar.bz2
gnome-vfs-2.24.4.tar.gz
gnutls-2.10.4.tar.bz2
gst-plugins-bad-0.10.23.tar.gz
gst-plugins-base-0.10.36.tar.gz
gst-plugins-good-0.10.31.tar.gz
gst-plugins-ugly-0.10.19.tar.gz
gstreamer-0.10.36.tar.gz
gst-rtsp-server-0.10.8.tar.bz2
gtk+-2.23.3.tar.gz
gtk-doc-1.15.tar.gz
gtk-engines-2.20.2.tar.gz
intltool-0.40.6.tar.gz
libogg-1.1.4.tar.gz
liboil-0.3.17.tar.gz
libpng-1.4.4.tar.gz
libproxy-0.2.3.tar.bz2
libsoup-2.32.2.tar.gz
libtheora-1.1.1.tar.bz2
libtool-2.4.tar.gz
libunique-1.1.6.tar.gz
libvorbis-1.2.3.tar.gz
m4-1.4.15.tar.gz
metacity-2.34.0.tar.gz
orc-0.4.11.tar.gz
pango-1.28.3.tar.gz
pixman-0.21.2.tar.gz
shared-mime-info-0.90.tar.bz2
totem-2.30.2.tar.gz
totem-pl-parser-2.32.1.tar.gz
xvidcore-1.2.2.tar.gz