Thanks for packaging the xlibmesa3-gl-dbg. Here's the backtrace.
(gdb) where #0 0x40430061 in gl_3dnow_transform_points3_general_raw () from /usr/X11R6/lib/modules/dri/debug/mga_dri.so #1 0x0804dd40 in ?? () #2 0x403d727e in do_vertex_pipeline (VB=0x0) at stages.c:353 #3 0x403b5299 in gl_run_pipeline (VB=0x804dd40) at pipeline.c:525 #4 0x4042431f in gl_execute_cassette (ctx=0x8051490, IM=0x808eca0) at vbxform.c:963 #5 0x4036f1d7 in execute_list (ctx=0x8051490, list=1) at dlist.c:4090 #6 0x4036f73a in _mesa_CallList (list=1) at dlist.c:4929 #7 0x08049c54 in ?? () #8 0x00000001 in ?? () 3dnow seems like an odd thing to be seeing, as this is an intel processor: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 2.80GHz stepping : 9 cpu MHz : 2798.700 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid bogomips : 5583.66 processor : 1 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 2.80GHz stepping : 9 cpu MHz : 2798.700 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid bogomips : 5596.77 -- greg