It often happens when i synchronize my workbench. I use subclipse with svn version 1.7.9.

already tried this https://stackoverflow.com/a/16384754/835703 but it didn't help.

java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

eclipse.ini

-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.200.v20130807-1835
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vm
/home/user/opt/jdk1.7/bin/java
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Dorg.eclipse.swt.browser.DefaultType=mozilla
-XX:MaxPermSize=256m
-Xms40m
-Xmx512m