I'm sometimes (50% of the time) getting the following CPython 2.5.1 crash when my program terminates. I would include the source to my program, but it has lots of dependencies, and it would be a substantial task to find a minimal case.

*** glibc detected *** python: corrupted double-linked list: 0x0a2018a0 ***
======= Backtrace: =========
/lib/libc.so.6[0xd14e9f]
/lib/libc.so.6[0xd167ae]
/lib/libc.so.6(__libc_free+0x78)[0xd19f6f]
/usr/local/lib/libpython2.5.so.1.0(PyObject_Free+0x53)[0x211933]
/usr/local/lib/libpython2.5.so.1.0(PyObject_GC_Del+0x53)[0x288fc3]
/usr/local/lib/libpython2.5.so.1.0(PyFrame_Fini+0x31)[0x1f8f81]
/usr/local/lib/libpython2.5.so.1.0(Py_Finalize+0x105)[0x27d825]
/usr/local/lib/libpython2.5.so.1.0(Py_Exit+0x17)[0x27d927]
/usr/local/lib/libpython2.5.so.1.0[0x27da4f]
/usr/local/lib/libpython2.5.so.1.0(PyErr_PrintEx+0x1aa)[0x27dc6a]
/usr/local/lib/libpython2.5.so.1.0(PyErr_Print+0x1e)[0x27de6e]
/usr/local/lib/libpython2.5.so.1.0(PyRun_SimpleFileExFlags+0xf1)[0x27f0d1]
/usr/local/lib/libpython2.5.so.1.0(PyRun_AnyFileExFlags+0x7a)[0x27f46a]
/usr/local/lib/libpython2.5.so.1.0(Py_Main+0xae8)[0x288a78]
python(main+0x32)[0x8048592]
/lib/libc.so.6(__libc_start_main+0xdc)[0xcc84e4]
python[0x80484d1]
======= Memory map: ========
00110000-00120000 r-xp 00000000 08:02 489896     /lib/libpthread-2.4.so
00120000-00121000 r--p 0000f000 08:02 489896     /lib/libpthread-2.4.so
00121000-00122000 rw-p 00010000 08:02 489896     /lib/libpthread-2.4.so
00122000-00124000 rw-p 00122000 00:00 0
00124000-00147000 r-xp 00000000 08:02 489888     /lib/libm-2.4.so
00147000-00148000 r--p 00022000 08:02 489888     /lib/libm-2.4.so
00148000-00149000 rw-p 00023000 08:02 489888     /lib/libm-2.4.so
00149000-00159000 r-xp 00000000 08:02 2154663    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/cPickle.so
00159000-0015a000 rw-p 00010000 08:02 2154663    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/cPickle.so
0015a000-0015d000 r-xp 00000000 08:02 2154640    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/cStringIO.so
0015d000-0015e000 rw-p 00003000 08:02 2154640    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/cStringIO.so
0015e000-00161000 r-xp 00000000 08:02 2154619    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/time.so
00161000-00163000 rw-p 00002000 08:02 2154619    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/time.so
00163000-00167000 r-xp 00000000 08:02 2154653    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/collections.so
00167000-00168000 rw-p 00004000 08:02 2154653    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/collections.so
00168000-001a9000 r-xp 00000000 08:02 490243     /lib/libssl.so.0.9.8a
001a9000-001ad000 rw-p 00040000 08:02 490243     /lib/libssl.so.0.9.8a
001ad000-001af000 r-xp 00000000 08:02 2154635    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/fcntl.so
001af000-001b0000 rw-p 00002000 08:02 2154635    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/fcntl.so
001b0000-001b2000 r-xp 00000000 08:02 2154613    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/grp.so
001b2000-001b3000 rw-p 00001000 08:02 2154613    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/grp.so
001b3000-001b4000 r-xp 00000000 08:02 2154641    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/_bisect.so
001b4000-001b5000 rw-p 00001000 08:02 2154641    /toast/pkg/python/v2.5.1/1/root/lib/python2.5/lib-dynload/_bisect.so
001b5000-002bd000 r-xp 00000000 08:02 2139893    /toast/pkg/python/v2.5.1/1/root/lib/libpython2.5.so.1.0
002bd000-002e3000 rw-p 00107000 08:02 2139893    /toast/pkg/python/v2.5.1/1/root/lib/libpython2.5.so.1.0
002e3000-002e9000 rw-p 002e3000 00:00 0
002e9000-002f8000 r-xp 00000000 08:02 489892     /lib/libresolv-2.4.so
002f8000-002f9000 r--p 0000e000 08:02 489892     /lib/libresolv-2.4.so
002f9000-002fa000 rw-p 0000f000 08:02 489892     /lib/libresolv-2.4.so
002fa000-002fc000 rw-p 002fa000 00:00 0
002fc000-0030e000 r-xp 00000000 08:02 1290756    /usr/lib/libz.so.1.2.3
0030e000-0030f000 rw-p 00011000 08:02 1290756    /usr/lib/libz.so.1.2.3
0030f000-0032f000 r-xp 00000000 08:02 565445     /usr/lib/libpq.so.4.1
0032f000-00330000 rw-p 0001f000 08:02 565445     /usr/lib/libpq.so.4.1
00330000-0033f000 r-xp 00000000 08:02 2154660    /toast/pkg/pAborted