Inoltre spesso quando chiudo eclispe mi compare questo errore:

JVM terminated. Exit code=1
/usr/bin/java
-Xms40m
-Xmx256m
-jar /home/andrea/Programmi/eclipse/plugins/org.eclipse.equinox.launcher_1.0.1.R33x_v20070828. jar
-os linux
-ws gtk
-arch x86
-showsplash
-launcher /home/andrea/Programmi/eclipse/eclipse
-name Eclipse
--launcher.library /home/andrea/Programmi/eclipse/plugins/org.eclipse.equinox.launcher.gtk.linux.x86_1.0.2.R 331_v20071019/eclipse_1021.so
-startup /home/andrea/Programmi/eclipse/plugins/org.eclipse.equinox.launcher_1.0.1.R33x_v20070828. jar
-exitdata 12800d
-vm /usr/bin/java
-vmargs
-Xms40m
-Xmx256m
-jar /home/andrea/Programmi/eclipse/plugins/org.eclipse.equinox.launcher_1.0.1.R33x_v20070828. jar


P..S
La plugin mancante è org.eclipse.wst.sse.ui