Bug 49005 Preference page doesn't get enough space to draw itself
200312162000 There are cases where the preference dialog doesn't allocate enough space for a page to draw itself. The width of the page seems to be a few pixels short.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
*
	 * @param newMessage the message, or <code>null</code> to clear
	 *   the message
	 * @param newType the message type
	 * @since 2.0
	 */
	public void setMessage(String newMessage, int newType) {
		Image newImage = null;
		if (newMessage != null) {
			switch (newType) {
				case IMessageProvider.NONE :
					break;
				case IMessageProvider.INFORMATION :
					newImage = JFaceResources.getImage(DLG_IMG_MESSAGE_INFO);
					break;
				case IMessageProvider.WARNING :
					newImage = JFaceResources.getImage(DLG_IMG_MESSAGE_WARNING);
					break;
				case IMessageProvider.ERROR :
					newImage = JFaceResources.getImage(DLG_IMG_MESSAGE_ERROR);
					break;
			}
		}
		showMessage(newMessage, newImage);
	}
	/**
	 * Sets the minimum page size.
	 *
	 * @param minWidth the minimum page width
	 * @param minHeight the minimum page height