Interstate Bakeries Files for Bankruptcy  NEW YORK (Reuters) - Interstate Bakeries Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=IBC.N target=/stocks/quickinfo/fullquote"&gt;IBC.N&lt;/A&gt;,  maker of Hostess Twinkies and Wonder Bread, filed for  bankruptcy on Wednesday after struggling with more than \$1.3  billion in debt and high costs.