As requested, the stack trace:
#0 0x40077a51 in kill () from /lib/libc.so.6
#1 0x40077872 in raise () from /lib/libc.so.6
#2 0x40078986 in abort () from /lib/libc.so.6
#3 0x0825137d in ddxGiveUp () at xf86Init.c:1094
#4 0x082b86e0 in AbortServer () at utils.c:436
#5 0x082b9985 in FatalError (f=0x85ab9e0 "Caught signal %d. Server
aborting\n")
at utils.c:1399
#6 0x082628a8 in xf86SigHandler (signo=11) at xf86Events.c:1085
#7 0x400779d8 in sigaction () from /lib/libc.so.6
#8 0x081cefc0 in XAAPolySegment (pDrawable=0x6, pGC=0x89e45d0, nseg=0,
pSeg=0x8932644)
at xaaSeg.c:238
#9 0x0837c93e in miSpritePolySegment (pDrawable=0x882d880, pGC=0x89e45d0,
nseg=1,
pSegs=0x893263c) at misprite.c:1406
#10 0x08295fec in ProcPolySegment (client=0x87c6d70) at dispatch.c:1882
#11 0x08293967 in Dispatch () at dispatch.c:462
#12 0x082a34d4 in main (argc=9, argv=0xbffffdc4, envp=0xbffffdec) at main.c:454
pDrawable=0x6 in XAAPolySegment looks like a problem. One level up
from that, pDrawable is a 1600x1200, depth 24, bpp 32, type 0, class
1 drawable.
-jwb
