This is a peer-to-peer community formum, you can mostly get help and insight from community members here. If you want a more official approach, please contact AMD directly (link on the bottom of the page) and/or use the following links:
Linux issue reporting form: http://www.amd.com/linuxreport
Forum for Steam related problems: http://devgurus.amd.com/community/steam-linux
If you still want to get help here, please include as much information about your system and the issue you have as you can.
CPU: AMD Phenom II X4 810 @ 3250MHz | RAM: Kingmax 2x2GB DDR2 800 @ 833MHz| MoBo: MSI K9A2 CF v1.0 (BIOS: 1.D)| GPU: Asus HD 6850 1024MB (DirectCu) @ 850/1100MHz | Display: L24FHD | PSU: PC Power & Cooling Silencer 750 Quad | OS: MS Windows 7 Pro x64
CPU: Pentium 4 Northwood S478 @ 3200MHz | RAM: 1,5GB DDR 400| MoBo: Gigabyte GA-8S661FXMP-RZ | GPU: ASUS Radeon X1650 Pro 256MB | Display: Dimarson 19" CRT | PSU: Noname 400W | OS: MS Windows XP Pro