.
Thread 1 (process 8851):
#0  0x00007fa424a2549b in ?? () from /usr/lib/libxapian.so.15
#1  0x00007fa424a264d5 in ?? () from /usr/lib/libxapian.so.15
#2  0x00007fa424a38262 in Xapian::Stem::Internal::operator() ()
   from /usr/lib/libxapian.so.15
#3  0x00007fa424a35d7b in Xapian::Stem::operator() ()
   from /usr/lib/libxapian.so.15
#4  0x00007fa424a70296 in Xapian::TermGenerator::Internal::index_text ()
   from /usr/lib/libxapian.so.15
#5  0x00007fa424a6f100 in Xapian::TermGenerator::index_text_without_positions
    () from /usr/lib/libxapian.so.15
#6  0x00007fa424d239ff in ?? ()
   from /usr/lib/python2.5/site-packages/_xapian.so
#7  0x0000000000418c33 in PyObject_Call ()
#8  0x000000000048f582 in PyEval_EvalFrameEx ()
#9  0x00000000004920e2 in PyEval_EvalFrameEx ()
#10 0x00000000004920e2 in PyEval_EvalFrameEx ()
#11 0x00000000004927cd in PyEval_EvalCodeEx ()
#12 0x00000000004929c2 in PyEval_EvalCode ()
#13 0x00000000004b2678 in PyRun_FileExFlags ()
#14 0x00000000004b291b in PyRun_SimpleFileExFlags ()
#15 0x000000000041488a in Py_Main ()
#16 0x00007fa426bea466 in __libc_start_main () from /lib/libc.so.6
#17 0x0000000000413ca9 in _start ()