Nortel Delays Filing Results -- Again  MONTREAL (Reuters) - Nortel Networks Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=NT.TO target=/stocks/quickinfo/fullquote"&gt;NT.TO&lt;/A&gt;, one of  the world's biggest telecoms equipment makers, has again  delayed filing its restated financial results, mainly because  of revenue reporting issues, the company said on Thursday .