Has anyone out there ever used Abtrusion Detector (http://www.abtrusion.com/). I've heard nothing but positive comments about it (most recently at http://www.markusjansson.net/software.html). I'm torn between that application and Process Guard, which I understand is similar in many respects. I've been leaning towards Process Guard simply because I like DCS's other products (TDS-3, Port Explorer), but I've heard AD has more to offer. I need something similar to fill what I think is the final hole in my security portfolio. Suggetions anyone?