FMOODS 2006: The 8th IFIP International Conference on Formal Methods for Open Object-Based Distributed Systems: part of the federated conferences DisCoTec (Distributed Computing Techniques). Bologna, Italy; 14--16 June 2006.PerEL 2006: The 2nd IEEE International Workshop on PervasivE Learning, in conjunction with IEEE PerCom 2006. Pisa, Italy; 17 March 2006.SOFSEM 2006: 32nd International Conference on Current Trends in Theory and Practice of Computer Science. Merin, Czech Republic; 21--27 January 2006.Transgressive Computing 2006: University of Granada, Spain; 24--26 April 2006.WORLDCOMP'06: World Congress in Computer Science, Computer Engineering, and Applied Computing. Las Vegas, NV, USA; 26--29 June 2006.