Tribune Earnings to Trail Estimates  NEW YORK (Reuters) - Newspaper and television station owner  Tribune Co. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=TRB.N target=/stocks/quickinfo/fullquote"&gt;TRB.N&lt;/A&gt; on Wednesday said third-quarter earnings  would lag Wall Street estimates because of lower-than-expected  publishing and broadcasting revenue.