Longhorn Comes Up Short Microsoft finally gives us a date for the release of its Longhorn operating system, but the failure to deliver on a highly touted feature raises questions about the company's future. &lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2" color="#666666"&gt;&lt;B&gt;-washingtonpost.com&lt;/B&gt;&lt;/FONT&gt;