Error in Javadocs in Eclipse

[Kaustubh Bansal]

Hello..
I'm working on Eclipse Ganeymede (version 3.4.1). Javadocs are not being displayed for any Library class.
I'm pasting an entry of Error log below.
Thanks in advance

!ENTRY org.eclipse.jdt.core 4 1008 2009-01-21 20:34:39.671
!MESSAGE Cannot retrieve the attached javadoc for ActionListener [in ActionListener.class [in java.awt.event [in C:\Program Files\Java\jre6\lib\rt.jar]]]java.net.UnknownHostException: java.sun.com
	at java.net.PlainSocketImpl.connect(Unknown Source)
	at java.net.SocksSocketImpl.connect(Unknown Source)
	at java.net.Socket.connect(Unknown Source)
	at java.net.Socket.connect(Unknown Source)
	at sun.net.NetworkClient.doConnect(Unknown Source)
	at sun.net.www.http.HttpClient.openServer(Unknown Source)
	at sun.net.www.http.HttpClient.openServer(Unknown Source)
	at sun.net.www.http.HttpClient.<init>(Unknown Source)
	at sun.net.www.http.HttpClient.New(Unknown Source)
	at sun.net.www.http.HttpClient.New(Unknown Source)
	at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
	at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
	at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
	at org.eclipse.jdt.internal.core.JavaElement.getURLContents(JavaElement.java:751)
	at org.eclipse.jdt.internal.core.BinaryType.getJavadocContents(BinaryType.java:1059)
	at org.eclipse.jdt.internal.core.BinaryMethod.getAttachedJavadoc(BinaryMethod.java:558)
	at org.eclipse.jdt.internal.ui.text.javadoc.JavadocContentAccess2.findDocInHierarchy(JavadocContentAccess2.java:270)
	at org.eclipse.jdt.internal.ui.text.javadoc.JavadocContentAccess2.getHTMLContent(JavadocContentAccess2.java:102)
	at org.eclipse.jdt.internal.ui.infoviews.JavadocView.getJavadocHtml(JavadocView.java:983)
	at org.eclipse.jdt.internal.ui.infoviews.JavadocView.computeInput(JavadocView.java:866)
	at org.eclipse.jdt.internal.ui.infoviews.AbstractInfoView$2.run(AbstractInfoView.java:617)