Both sessions went well. The myphpbusters talk got greeted with much more enthousiasm though than my refactoring talk, but I guess the nature of that presentation is much more open and informal, where the refactoring talk goes more into theory and concepts that developers may not yet be familiar with. I got the idea that some people in the room had a hard time grasping the concept of refactoring. I tried to explain it, and hope the message got through.
The conference itself so far was quite nice. Lots of nice people, had interesting talks with people and attended a few sessions myself, of which I think the best was the one by Lars Jankowfsky on why architecture matters.