Dear Participant to Diffraction 2010, this is the fifth circular of the Workshop DIFFRACTION 2010: International Workshop on Diffraction in High-Energy Physics, to be held in Otranto (Lecce, Italy), September 10-15, 2010, web site http://www.cs.infn.it/diff2010. * Please spell-check your name and affiliation in the "List of participants" page and inform us about changes or misprints. * The scientific program is available now at the Workshop web page. Please spell-check the title of your talk and inform us about possible changes or misprints. The program has been discussed at length with conveners and is hardly modifiable. The only possible changes are those due to incompatibility with travel plans. * Please send us as soon as possible the details of your travel. We need them to organize transfers to/from the airport of Brindisi (or the nearby City Terminal of Lecce) and the hotel Baia dei Turchi on Sept. 10 and on Sept. 15 (transfers on different dates should be organized by each participant privately, the easiest way being to contact the hotel and to book its shuttle). No information from you within August 31 will be understood as no need of transfer. The temporary pick-up list is available at the Workshop web site, in the page "How to reach Otranto". Please cross-check it. We put in the list also people arriving on dates different from Sept. 10, to help clustering of people and to facilitate sharing the shuttle fair. Best regards, Alessandro Papa ############################################################### ADDRESS FOR CORRESPONDENCE TO LOCAL ORGANIZING COMMITTEE DIFFRACTION 2010 c/o Alessandro Papa Dipartimento di Fisica, Universita` della Calabria Ponte Bucci, cubo 31C I-87036 Arcavacata di Rende (Cosenza) Italy Phone: +39 0984 496015 (or 496018) Fax: +39 0984 494401 E-mail: diff2010@cs.infn.it For urgent communications after August 15, 2010 DIFFRACTION 2010 Alessandro Papa, phone: +39 320 8681201 Roberto Fiore, phone: +39 349 3230756