Bug 286949 [Browser] Bad usage of URL#equals(Object) in WebBrowserEditorInput
HEAD WebBrowserEditorInput#equals(..) calls URL#equals(Object), but the latter resolves the host of the URLs via DNS lookups, which is most of the time not what you want. You should instead compare the strings from URL#toExternalForm(). Furthermore, WebBrowserEditorInput should also override hashCode() (equal objects must have equal hash codes). Note that URL#hashCode() is also broken, so you should use URL#toExternalForm() there as well.
bundles/org.eclipse.ui.browser/src/org/eclipse/ui/internal/browser/WebBrowserEditorInput.java
}
	public ImageDescriptor getImageDescriptor() {
		return ImageResource
				.getImageDescriptor(ImageResource.IMG_INTERNAL_BROWSER);
	}
	
	/**
	 * Returns true if the name is locked and cannot be changed.
	 * 
	 * @return <code>true</code> if the name of the browser should not change
	 */
	protected boolean isNameLocked() {
		return (name != null);
	}
	/**
	 * Returns the name of this editor input for display purposes.
	 * <p>
	 * For instance, if the fully qualified input name is
	 * <code>"a\b\MyFile.gif"</code>, the return value would be just
	 * <code>"MyFile.gif"</code>.
	 * 
	 * @return the file name string
	 */
	public String getName() {
		if (name != null)
			return name;
		return Messages.viewWebBrowserTitle;
	}
	/*
	 * Returns an object that can be used to save the state of this editor