I wrote CCSA Exam Cram 2 (http://www.amazon.com/Check-Point-CCSA-Exam-156-210-4/dp/078...) which is a study guide for a Check Point firewall exam, and was the primary author for Wireless All In One for Dummies (http://www.amazon.com/Wireless-All-Dummies-Sean-Walberg/dp/0...)

I don't think I've got another book in me. For now I enjoy writing technical articles, mostly for IBM developerWorks. See http://seanwalberg.com for the list of articles.