$ sudo su ; cd /opt ; wget <url>

Download the appropriate tar.gz file from eclipse.{Replace the <url>}

For 64-bit Ubuntu:

wget http://d2u376ub0heus3.cloudfront.net/galileo/eclipse-java-galileo-linux-gtk-x86_64.tar.gz

For standard 32-bit Ubuntu:

wget http://d2u376ub0heus3.cloudfront.net/galileo/eclipse-java-galileo-linux-gtk.tar.gz

$ tar xzvf eclipse-java-galileo-linux-gtk*.tar.gz  ; mv eclipse eclipse3.5

$ sudo nano ~/bin/eclipse

Add the below, save and quit.

#/usr/bin/bash
`~/bin/packages/eclipse3.5/eclipse -vmargs -Xms128M -Xmx512M -XX:PermSize=128M -XX:MaxPermSize=512M &> /dev/null` &

Now make a custom application laucher and enjoy Eclipse.