If you use Linux, need a remote desktop solution, and VNC is killing you, give NX Server a try.  Even if you have a GUI console through your virtualization package, NX usually works a heck of a lot better!

You can get the free NoMachine NX Client here: http://www.nomachine.com/download-client-linux.php

To install the FreeNX server from a root command line:

# ADD THE FREENX SERVER REPOSITORY TO APT
add-apt-repository ppa:freenx-team
 
# UPDATE THE PACKAGE LIST
apt-get update
 
# INSTALL FREENX SERVER AND OPENSSH SERVER
apt-get install openssh-server freenx
 
# DOWNLOAD THE SETUP PACKAGE, EXTRACT, AND MOVE INTO PLACE
cd /root
wget https://bugs.launchpad.net/freenx-server/+bug/576359/+attachment/1378450/+files/nxsetup.tar.gz
tar -xvf nxsetup.tar.gz
mv nxsetup /usr/lib/nx/nxsetup
 
# RUN NXSETUP
/usr/lib/nx/nxsetup --install
[answer questions]
 
# DISPLAY AND COPY THE CLIENT DSA KEY
# YOU WILL NEED IT TO CONNECT THE CLIENT
cat /var/lib/nxserver/home/.ssh/client.id_dsa.key

NOTE: Make sure TCP port 22 is open on the machine’s firewall.  NX Server uses SSH for communication.

If you use CentOS, RHEL, or Fedora, I believe it is already in the built-in repositories.  Just do a:

yum install freenx-server
 
# DISPLAY AND COPY THE CLIENT DSA KEY
# YOU WILL NEED IT TO CONNECT THE CLIENT
cat /etc/nxserver/client.id_dsa.key

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