Special issue on DISC 2011

This special issue of Distributed Computing is based on papers that originally appeared, in preliminary and abbreviated form, in the Proceedings of the 25th International Symposium on Distributed Computing (DISC 2011), held in Rome, Italy on September 20–22, 2011. The papers were chosen by the Program Committee from the 31 regular papers presented at the Symposium, based on their quality and representation of the range of topics addressed in the Symposium. In addition to being reviewed, in preliminary form, by the Program Committee of DISC 2011, the papers selected for this special issue were subsequently refereed according to the standard practices of Distributed Computing. I wish to thank both the referees and the authors of these papers.