Scott Collins is an engineer, public speaker, technical evangelist, and one of the voices of the Open Source community. As a key participant and contributor to the Mozilla project since its inception, he first came into the public spotlight in PBS' documentary "Code Rush", chronicling Netscape's push to Open Source its pioneering browser. Collins now works for Trolltech where his title is Qt Evangelist.

Collins' technical depth and breadth, coupled with his skill at clearly communicating even the most challenging concepts, have made him a popular speaker around the globe on topics from the technical to the historical, social, and political ... often all in the same speech, illuminating the connections between.

Andrew Dunstan has been a developer, administrator, manager, instructor and consultant in the IT industry in the USA and Australia for around 20 years, in industries as diverse as transport, health, banking, education, petrochemicals, software development and government. His database experience has included Ingres, Oracle, Sybase, Informix, MSSQL and MySQL, as well as PostgreSQL. He currently working with HCS Systems in Garner, North Carolina as a Consultant, Senior Developer and founder of Database Practice.

He has been involved with PostgreSQL since 2003, when the company he was working for wanted a reference database to ship with its product. PostgreSQL seemed a very good fit. Unfortunately it didn't meet all the requirements at the time, but finding out about it got him reading the PostgreSQL Hackers mailing list. He volunteered to do a very small improvement, and his involvement just sort of snowballed from there.

Andrew has contributed to PostgreSQL in a number of areas, including configuration and logging enhancements, dollar quoting, CSV import/export, upgraded pl/perl, the Win32 port, rewriting the initdb and pg_ctl scripts in C, and a double metaphone function. A good deal of his time recently has gone into creating, maintaining and improving the PostgreSQL buildfarm, a distributed system for automated build checking. He is also one of the
administrators of the postgres community development site.

Michael Warfield is the Senior Researcher and Fellow on the X-Force of Internet Security Systems, Inc. (ISS).

With computer security experience dating back to the early 1970s and Unix experience dating back to the early 1980s, Mike is responsible for doing research into security vulnerabilities and intrusion protection techniques for ISS X-Force, the research division of ISS.

Prior to joining ISS, Mike has held positions such as, a Unix systems engineer, Unix consultant, security consultant and network administrator on the Internet. He is one of the resident Unix gurus at the Atlanta UNIX Users Group and is one of the founding members of the Atlanta Linux Enthusiasts. He is also an active member of the Samba development team and is a contributor to the Linux Kernel and numerous Open Source Software projects. Mike has published articles on both Samba and on Security and is a respected cryptographer in the Open Source community.