#0  0x003f3799 in sem_wait@@GLIBC_2.1 () from /lib/i386-linux-gnu/libpthread.so.0
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#1  0x080f2689 in PyThread_acquire_lock ()
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#2  0x080da4ac in PyEval_RestoreThread ()
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#3  0x00205221 in ?? () from /usr/lib/python2.7/dist-packages/xapian/_xapian.so
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#4  0x080dfeae in PyEval_EvalFrameEx ()
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#5  0x080db40b in PyEval_EvalFrameEx ()
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#6  0x080db40b in PyEval_EvalFrameEx ()
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#7  0x08104322 in ?? ()
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#8  0x080dadcc in PyEval_EvalFrameEx ()
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#9  0x080e1737 in PyEval_EvalCodeEx ()
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#10 0x080db1aa in PyEval_EvalFrameEx ()
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#11 0x080e1c3e in PyEval_EvalCodeEx ()
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#12 0x080db1aa in PyEval_EvalFrameEx ()
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#13 0x080e1737 in PyEval_EvalCodeEx ()
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#14 0x0812c517 in PyEval_EvalCode ()
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#15 0x0813c0b0 in ?? ()
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#16 0x080700b3 in PyRun_FileExFlags ()
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#17 0x08070af9 in PyRun_SimpleFileExFlags ()
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#18 0x0805c069 in Py_Main ()
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#19 0x0805b25b in main ()
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