70-316 time?

From: jrbareta (jrbareta_at_texoma.net)
Date: 09/28/04 

Date: Tue, 28 Sep 2004 09:24:10 -0500

    I signed up for 70-316 and saw the exam time was listed as 170 minutes
(2hr 50 min). I have gone through several well known exam preps and they
usually say the exams are roughly 50 questions and 90 minutes.
    Why the difference??