Here are some slides from the conference:
[http://purdy.info/useperl/th02_slides.pdf TU02 - Developing Web Applications with CGI::Application]
[http://purdy.info/useperl/th06_slides.pdf TU06 - Server-Side Input Validation with Data::FormValidator]
[http://people.apache.org/~rbowen/presentations/apacheconEU2005/ - All presentations by Rich Bowen]
[http://people.apache.org/~jeremias/slides/FOP%20Optimization%20Presentation%20ApacheCon%20EU%202005.pdf TH24 - Apache FOP: Optimizing speed and memory consumption]
[http://www.stdlib.net/~colmmacc/Apachecon-EU2005/ TH01 - Scaling Apache 2.x beyond 20,000 concurrent downloads]
[http://www.outoforder.cc/presentations/ - All presentations by Paul Querna]
[http://derickrethans.nl/talks.php - All presentations by Derick Rethans]
[http://people.apache.org/~rbowen/presentations/apacheconEU2005/hate_apache.pdf - Rich Bowen's "Why I hate Apache" talk]