1. 2009-11-15 [3] [CentOS-promo] LinuxTag lets change it Geerd-Dietg 2. 2009-11-15 [3] [CentOS-promo] south tyrol free software con Geerd-Dietg 3. 2009-11-15 [2] [CentOS-promo] CentOS CeBIT effort Ralph Angen 4. 2009-11-09 [6] [CentOS-promo] Germany Chemnitzer Linux-Tage Geerd-Dietg