BellSouth Posts Lower Earnings  WASHINGTON (Reuters) - BellSouth Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=BLS.N target=/stocks/quickinfo/fullquote"&gt;BLS.N&lt;/A&gt; on Monday  said third-quarter earnings fell due to hurricane damage in the  southeastern U.S.