By Damon Darlin and Matt Richtel Even though the furor over Hewlett-Packard's spying operation has claimed its highest-ranking victim, with the resignation of its chairwoman, Patricia Dunn, many questions about the case have yet to be answered.

By Seth Schiesel and Matt Richtel In the five months since Microsoft unveiled a prototype of its new video game machine, the Xbox 360, the company has tried to generate excitement by staging demonstrations of the console's ability to play music and display digital photographs and by trumpeting its online community features.