Please note that the deadlines for early registration and hotel reservations for SIGCOMM 2005 expire on Monday August 1, 2005. Saswati Sarkar Assistant Professor Department of Electrical and Systems Engineering University of Pennsylvania Email: swati@seas.upenn.edu Phone: 2155739071 Fax: 2155732068 Webpage: http://www.seas.upenn.edu/~swati Mail: 354 Moore, 200 S. 33rd street Philadelphia, PA 19107 USA