I've just installed eclipse using the package manager, and I cannot 
start the program. This is what I installed:

$ rpm -q eclipse-jdt
eclipse-jdt-3.2.1-19.el5.x86_64

Here is my computer's info:

$ cat redhat-release 
Scientific Linux SL release 5.2 (Boron)

$ cat /proc/cpuinfo
model name      : Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz

$ cat /proc/meminfo
MemTotal:      3907664 kB
MemFree:       2096508 kB

$ cat partitions 
major minor  #blocks  name

   8     0  244140625 sda
   8     1     104391 sda1
   8     2  244035382 sda2
 253     0  241991680 dm-0
 253     1    2031616 dm-1

Here is the text from the error log:

$ cat /home/cmoore/workspace/.metadata/.log
!SESSION 2009-02-10 16:33:01.457
-----------------------------------------------
eclipse.buildId=M20060921-0945
java.version=1.6.0_12
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Command-line arguments:  -os linux -ws gtk -arch x86_64

!ENTRY org.eclipse.osgi 4 0 2009-02-10 16:33:02.549
!MESSAGE Application error
!STACK 1
java.lang.UnsatisfiedLinkError: /usr/lib64/eclipse/configuration/org.eclipse.osgi/bundles/101/1/.cp/libswt-pi-gtk-3235.so: /usr/lib64/eclipse/configuration/org.eclipse.osgi/bundles/101/1/.cp/libswt-pi-gtk-3235.so: wrong ELF class: ELFCLASS64 (Possible cause: architecture word width mismatch)
        at java.lang.ClassLoader$NativeLibrary.load(Native Method)
        at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1778)
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1687)
        at java.lang.Runtime.loadLibrary0(Runtime.java:823)
        at java.lang.System.loadLibrary(System.java:1030)
        at
org.eclipse.swt.internal.Library.loadLibrary(Library.java:123)
        at org.eclipse.swt.internal.gtk.OS.<clinit>(OS.java:22)
        at
org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:63)
        at
org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:54)
        at org.eclipse.swt.widgets.Display.<clinit>(Display.java:126)
        at
org.eclipse.ui.internal.Workbench.createDisplay(Workbench.java:433)
        at org.eclipse.ui.PlatformUI.createDisplay(PlatformUI.java:161)
        at
org.eclipse.ui.internal.ide.IDEApplication.createDisplay(IDEApplication.java:122)
        at
org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:75)
        at org.eclipse.core.internal.runtime.PlatformActivator
$1.run(PlatformActivator.java:78)
        at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
        at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
        at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
        at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
        at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
        at org.eclipse.core.launcher.Main.run(Main.java:977)
        at org.eclipse.core.launcher.Main.main(Main.java:952)

Any ideas how I can fix this?

Thanks,
Craig