[quote user="6233maxxer"]this worked for me. I just adjusted a bit for 14.04:
apt-get install libc6:i386 libgcc1:i386 gcc-4.6-base:i386 libstdc++5:i386 libstdc++6:i386 libasound2:i386 libgtk2.0-0:i386 libxtst6:i386
On a fresh build of Ubuntu 14.04 trying to install Zimbra Desktop 7.2.5 GA Build 12038 I had to do the above steps plus the following. The end result appears to work just fine.
Either symlink or copy libxul.so from /opt/zimbra/zdesktop/linux/prism/xulrunner/libxul.so to /usr/lib/
Lastly, you'll need to run:
sudo apt-get install libxt6:i386
This includes the file "libXt.so.6" which was preventing Zimbra from running for me.
This has been tested on two separate builds of Ubuntu 14.04 both with success. Hope this helps.