Fixing the Eclipse PermGen Space (Out of Memory) Error When Using JDK 1.6.0_21

eclipse.ini

-startup
plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.0.v20100503
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256m
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx512m
-XX:MaxPermSize=256m

http://www.coreservlets.com/Apache-Tomcat-Tutorial/eclipse-jdk1.6.0_21-permgen-bug.html

ERROR:
http://www.eclipse.org/forums/index.php?t=msg&goto=542715&