Ralph Losey is one of the best blawgers (not to mention thinkers) on the subject of e-discovery.  In this very well-researched post, Ralph observes that when it comes to EDD, most attorneys are in waaay over our heads:

The true cause of the e-discovery morass is our profession’s failure to keep pace with the dizzying advances of new technologies. … To put it bluntly, most of us trial lawyers are not fully competent to practice law in today’s digital age of terabytes of potential evidence. Most of us do not know how to do e-discovery in an efficient and cost effective manner in that kind of an environment, much less employ effective quality control procedures.