Eclipse 3.4 on Linux 64 bit

It was a pain in the ass to install eclipse 3.4 on linux machine.
When you try to install eclipse on linux, it is always better to install the latest versions of Java, Eclipse. Do not try to mix things, it will screw your life. JRE downloaded from Sun will not work with eclipse in this case. Eclipse crashes very frequently when I used Sun JRE. This happens when build automatically is turned on or when we try to compile a file. The best option I could find was IBM Java 6. Download it and use it with eclipse 3.4.

Download IBM's Java 6
Download Eclipse 3.4 for 64 bit Linux

Modify eclipse.ini file by adding,
-vm
/users/me/jdk1.6/bin/java

Create a eclipse.sh file and export JAVA_HOME.

export PATH=/users/me/jdk1.6/bin:$PATH

Add language and encoding related informations if necessary.

Use eclipse.sh to launch eclipse.

This might solve some of your issues, but it seems that 3.4 is not working properly on Linux.
I may be missing some more information. Dialogs and Wizards does not show up most of the times. I have no clue what is going on in the background. One thing I noticed was, they removed the concept of .eclipseextension, now we have not so good option available through Software Updates. You can add a Local site and point to different plugin directories. This automatically copies the available plugins to the base eclipse installation. I do not find it good.