Office Depot Warns, Blames Hurricanes  CHICAGO (Reuters) - Office Depot Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=ODP.N target=/stocks/quickinfo/fullquote"&gt;ODP.N&lt;/A&gt; on Tuesday  warned of weaker-than-expected full-year profit because of the  string of hurricanes in Florida and poor sales across North  America and Europe, sending its stock down nearly 8 percent.