Well, just got done with one of the more arcane problems I’ve ever seen. Apparently with CM 4.1 and the addition of HTTPS for the web pages, DC Directory also went HTTPS. The problem I ran into was that for some reason, DC Directory stopped liking to deliver HTTPS requests. After 16 hours on the phone with Cisco TAC on a P1 case, someone suggested we turn HTTPS on DC Directory off. That fixed the problem of the directories not synching, and CTI stuff finally started working again.