Glad you got it working Carsten, Just in time for the new release.
Proprietary Linux Driver Release: 8.7
Linux Proprietary Driver - Catalyst 8.7 Release: x86 and x86_64 variants from ATI Proprietary Linux Driver Releases Driver version: 8.512
NEW FEATURES: (1) Production support for SLED 10 SP2, Ubuntu 8.04 (2) Early look support for OpenSUSE 11, RedFlag DT 7.0
ISSUES RESOLVED: (1) SECAM, NTSC or PAL signal changes when using aticonfig or cccle were not applied to the TV display output. (2) Corruption when switching from laptop's display to CRT. (3) Segmentation fault when launching SUZI/textured video. (4) Direct GL context failure when creating two successive connections. (5) Ubuntu 7.04: aticonfig --enable-monitor no longer results in X restarting.