Eclipse hang

Something eclipse just hang at the loading splash screen and refuse to start.
c
http://blog.chris-alex-thomas.com/2009/08/26/eclipse-refuses-to-start-again/
rm -rf ~/workspace/.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.ui.prefs

In some case this also work
http://letsgetdugg.com/2009/04/19/recovering-a-corrupt-eclipse-workspace/

rm -rf  ~/workspace/.metadata/.plugins/org.eclipse.core.resources