Mine

Python 2.4.3 (#1, Jun 13 2006, 11:46:08)
[GCC 4.1.1 20060525 (Red Hat 4.1.1-1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.execlp("xclock")
*** glibc detected *** <unknown>: free(): invalid next size (fast): 0x0974a8c8 ***
======= Backtrace: =========
/lib/libc.so.6[0x977f18]
/lib/libc.so.6(__libc_free+0x78)[0x97b3ef]
/usr/lib/libXt.so.6(XtFree+0x21)[0x3ddf3f1]
/usr/lib/libXt.so.6[0x3e07389]
/usr/lib/libXt.so.6[0x3e075af]
/usr/lib/libXt.so.6[0x3e09ed7]
/usr/lib/libXt.so.6[0x3de7ae8]
/usr/lib/libXt.so.6[0x3de8554]
/usr/lib/libXt.so.6(_XtAppCreateShell+0x85)[0x3de8935]
/usr/lib/libXt.so.6(XtAppCreateShell+0xdc)[0x3de8b6c]
/usr/lib/libXt.so.6(XtOpenApplication+0xfa)[0x3df3f1a]
[0x804d134]
/lib/libc.so.6(__libc_start_main+0xdc)[0x929724]
[0x8049b31]
======= Memory map: ========
00190000-001c8000 r-xp 00000000 03:01 1714180    /usr/lib/libfontconfig.so.1.0.4001c8000-001cc000 rwxp 00038000 03:01 1714180    /usr/lib/libfontconfig.so.1.0.4001cc000-001cd000 rwxp 001cc000 00:00 0
001cf000-001e6000 r-xp 00000000 03:01 1712488    /usr/lib/libICE.so.6.3.0
001e6000-001e7000 rwxp 00016000 03:01 1712488    /usr/lib/libICE.so.6.3.0
001e7000-001e9000 rwxp 001e7000 00:00 0
001eb000-001f3000 r-xp 00000000 03:01 1714182    /usr/lib/libSM.so.6.0.0
001f3000-001f4000 rwxp 00008000 03:01 1714182    /usr/lib/libSM.so.6.0.0
00217000-0022d000 r-xp 00000000 03:01 1729120    /usr/lib/libXmu.so.6.2.0
0022d000-0022e000 rwxp 00016000 03:01 1729120    /usr/lib/libXmu.so.6.2.0
00418000-00420000 r-xp 00000000 03:01 1714173    /usr/lib/libXrender.so.1.3.0
00420000-00421000 rwxp 00007000 03:01 1714173    /usr/lib/libXrender.so.1.3.0
008f2000-008f3000 r-xp 008f2000 00:00 0          [vdso]
008f3000-0090c000 r-xp 00000000 03:01 198968     /lib/ld-2.4.so
0090c000-0090d000 r-xp 00018000 03:01 198968     /lib/ld-2.4.so
0090d000-0090e000 rwxp 00019000 03:01 198968     /lib/ld-2.4.so
00914000-00a41000 r-xp 00000000 03:01 198969     /lib/libc-2.4.so
00a41000-00a43000 r-xp 0012d000 03:01 198969     /lib/libc-2.4.so
00a43000-00a44000 rwxp 0012f000 03:01 198969     /lib/libc-2.4.so
00a44000-00a47000 rwxp 00a44000 00:00 0
00a49000-00a6c000 r-xp 00000000 03:01 198970     /lib/libm-2.4.so
00a6c000-00a6d000 r-xp 00022000 03:01 198970     /lib/libm-2.4.so
00a6d000-00a6e000 rwxp 00023000 03:01 198970     /lib/libm-2.4.so
00a70000-00a72000 r-xp 00000000 03:01 200022     /lib/libdl-2.4.so
00a72000-00a73000 r-xp 00001000 03:01 200022     /lib/libdl-2.4.so
00a73000-00a74000 rwxp 00002000 03:01 200022     /lib/libdl-2.4.so
00a76000-00a88000 r-xp 00000000 03:01 1713188    /usr/lib/libz.so.1.2.3
00a88000-00a89000 rwxp 00011000 03:01 1713188    /usr/lib/libz.so.1.2.3
00aa1000-00b9a000 r-xp 00000000 03:01 1714172    /usr/lib/libX11.so.6.2.0
00b9a000-00b9e000 rwxp 000f9000 03:01 1714172    /usr/lib/libX11.so.6.2.0
00ba0000-00ba2000 r-xp 00000000 03:01 1714170    /usr/lib/libXau.so.6.0.0
00ba2000-00ba3000 rwxp 00001000 03:01 1714170    /usr/lib/libXau.so.6.0.0
00ba5000-00baa000 r-xp 00000000 03:01 1714171    /usr/lib/libXdmcp.so.6.0.0
00baa000-00bab000 rwxp 00004000 03:01 1714171    /usr/lib/libXdmcp.so.6.0.0
00bad000-00bb8000 r-xp 00000000 03:01 200025     /lib/libgcc_s-4.1.1-20060525.so.1
00bb8000-00bb9000 rwxp 0000a000 03:01 200025     /lib/libgcc_s-4.1.1-20060525.so.1
00bbb000-00bca000 r-xp 00000000 03:01 1714174    /usr/lib/libXext.so.6.4.0
00bca000-00bcb000 rwxp 0000e000 03:01 1714174    /usr/lib/libXext.so.6.4.0
00bcd000-00bdd000 r-xp 00000000 03:01 1707960    /usr/lib/libXpm.so.4.11.0
00bdd000-00bde000 rwxp 00010000 03:01 1707960    /usr/lib/libXpm.so.4.11.0
00cd4000-00d32000 r-xp 00000000 03:01 1729121    /usr/lib/libXaw7.so.7.0.0
00d32000-00d39000 rwxp 0005d000 03:01 1729121    /usr/lib/libXaw7.so.7.0.0
00d68000-00dd3000 r-xp 00000000 03:01 1714179    /usr/lib/libfreetype.so.6.3.8
00dd3000-00dd6000 rwxp 0006a000 03:01 1714179    /usr/lib/libfreetype.so.6.3.8
00dd8000-00df7000 r-xp 00000000 03:01 200023     /lib/libexpat.so.0.5.0
00df7000-00df9000 rwxp 0001e000 03:01 200023     /lib/libexpat.so.0.5.0
03dd2000-03e27000 r-xp 00000000 03:01 1722233    /usr/lib/libXt.so.6.0.0
03e27000-03e2b000 rwxp 00054000 03:01 1722233    /usr/lib/libXt.so.6.0.0
06d7d000-06d90000 r-xp 00000000 03:01 1714181    /usr/lib/libXft.so.2.1.2
06d90000-06d91000 rwxp 00012000 03:01 1714181    /usr/lib/libXft.so.2.1.2
06ee3000-06f06000 r-xp 00000000 03:01 1712267    /usr/lib/libxkbfile.so.1.0.0
06f06000-06f07000 rwxp 00023000 0Aborted