Tech Sector's Mixed Signals The pink slips are flying into mailboxes and jobs are flying out of the country. But there are signs that give reason for some optimism in the tech sector. &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;