Dear sir,
i use the mesa experimental and r600 on my Fedora 12, good job work fine, except compressed texture uploading are not supported .. i think.
how can i help you more on this subject? if you want any information say me


______________________________________________________
----------------Computer--------------------------
Processor	4x AMD Phenom(tm) II X4 955 Processor
Memory	4058MB (675MB used)
Operating System	Fedora release 12 (Constantine)
----------------Display--------------------------
Resolution	2960x1050 pixels
OpenGL Renderer	Mesa DRI R600 (RV730 9490) 20090101 TCL
X11 Vendor	The X.Org Foundation
----------------Version--------------------------
Kernel	Linux 2.6.31.5-127.fc12.x86_64 (x86_64)
Compiled	#1 SMP Sat Nov 7 21:11:14 EST 2009
C Library	Unknown
Default C Compiler	GNU C Compiler version 4.4.2 20091027 (Red Hat 4.4.2-7) (GCC)
Distribution	Fedora release 12 (Constantine)
----------------Display[/COLOR]
Resolution	2960x1050 pixels
Vendor	The X.Org Foundation
Version	1.7.1
----------------Monitors---------------------------
Monitor 0	1680x1050 pixels
Monitor 1	1280x1024 pixels
----------------OpenGL---------------------------
Vendor	Advanced Micro Devices, Inc.
Renderer	Mesa DRI R600 (RV730 9490) 20090101 TCL
Version	1.4 Mesa 7.7-devel
Direct Rendering	Yes
______________________________________________________

kind regards