Report: Equity Firms Stalk Adelphia  NEW YORK (Reuters) - A group of private equity firms is  courting bankrupt cable firm Adelphia Communications Corp.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=ADELQ.PK target=/stocks/quickinfo/fullquote"&gt;ADELQ.PK&lt;/A&gt; with a view to making a joint bid for its assets,  the New York Times reported on Friday, citing executives  involved in the auction.