[XFree86] Xserver crash

hi I am using linux-2.6.11 (uclibc) kernel with ati framebuffer driver (RAGE XL). When i am using Xserver on my normaly it started and works, but it get crashed when moving windows on it, and we cannot predict when it crash.At the time of crash always get the debug message debug atyfb:

[XFree86] Xfree86 error

when I am using buildroot with package X11R6.8.2-src.tar.bz2 and target as mipsel wat r the additional steps i have to do..? i got so many error when i build without any change .. Jiyo cricket on Yahoo! India cricket Yahoo! Messenger Mobile Stay in touch with your buddies all the