TexturedXrender crashing system

[PuckPoltergeist]

When enabling TexturedXrender, I can reliable crash my system. Most times only hard reset helps, but at least two times only the X-server died and I got the log:

Backtrace:
0: /usr/bin/X(xorg_backtrace+0x26) [0x4e8f26]
1: /usr/bin/X(xf86SigHandler+0x39) [0x47d909]
2: /lib/libc.so.6 [0x7f59ab50f290]
3: /usr/lib64/xorg/modules/drivers//fglrx_drv.so(atiddxDisplayShadowIsShadowPixmap+0x2 2) [0x7f59aa5877b2]
4: /usr/lib64/xorg/modules//glesx.so [0x7f59a77e1fa3]
5: /usr/lib64/xorg/modules//libxaa.so(XAAComposite+0x1a5) [0x7f59a978bcb5]
6: /usr/lib64/xorg/modules//libxaa.so [0x7f59a97a91ad]
7: /usr/bin/X [0x529898]
8: /usr/bin/X [0x518d95]
9: /usr/bin/X(Dispatch+0x364) [0x44a664]
10: /usr/bin/X(main+0x45d) [0x4314ed]
11: /lib/libc.so.6(__libc_start_main+0xe6) [0x7f59ab4fb5c6]
12: /usr/bin/X [0x4308d9]

Fatal server error:
Caught signal 11. Server aborting

full log: http://www.stud.tu-ilmenau.de/~johi-in/Xorg.0.log

Backtrace:
0: /usr/bin/X(xorg_backtrace+0x26) [0x4e8f26]
1: /usr/bin/X(xf86SigHandler+0x39) [0x47d909]
2: /lib/libc.so.6 [0x7fa10730d290]
3: /usr/lib64/xorg/modules/drivers//fglrx_drv.so(atiddxDisplayShadowIsShadowPixmap+0x2 2) [0x7fa1063857b2]
4: /usr/lib64/xorg/modules//glesx.so [0x7fa1035dffa3]
5: /usr/lib64/xorg/modules//libxaa.so(XAAComposite+0x1a5) [0x7fa105589cb5]
6: /usr/lib64/xorg/modules//libxaa.so [0x7fa1055a71ad]
7: /usr/bin/X [0x529898]
8: /usr/bin/X [0x518d95]
9: /usr/bin/X(Dispatch+0x364) [0x44a664]
10: /usr/bin/X(main+0x45d) [0x4314ed]
11: /lib/libc.so.6(__libc_start_main+0xe6) [0x7fa1072f95c6]
12: /usr/bin/X [0x4308d9]

Fatal server error:
Caught signal 11. Server aborting

full log: http://www.stud.tu-ilmenau.de/~johi-in/Xorg.0.log-2

Anyone suggestions how to solve this?

PS: some notes to the system
- Gentoo unstable 64bit
- xorg-server-1.5.3
- Catalyst-8.12

[Vighy]

If I'm not wrong, that option is not supported yet.... It appeared 1 year ago... but seems no further work was done on it (and Textured2D).

Bridgman may say something to be taken more for sure. Don't know