The openSUSE Conference (oSC13) team is pleased to announce that registration has opened and our paper committee calls out for submission of session proposals! From July 18 until July 22 2013, Thessaloniki, the second largest city in Greece, will be host to the fifth oSC. Hundreds of hackers from around the globe will come to the country where the modern Age of Reason started. In the place where over 2500 years ago great thinkers sat down and taught the art of logical and critical thinking, we will sit down and talk critically about logic and code. Read on to find out how to register and where to send your session proposals!