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Thread 1 (Thread 1734):
#0  0x00007f6b02b43634 in pthread_mutex_lock () from /lib/libpthread.so.0
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#1  0x00007f6afc5fbbed in px_proxy_factory_get_proxies ()
   from /usr/lib/libproxy.so.0
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#2  0x00007f6aff400e4c in ffi_call_unix64 ()
   from /usr/lib/python2.6/lib-dynload/_ctypes.so
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#3  0x00007f6aff400bd4 in ffi_call ()
   from /usr/lib/python2.6/lib-dynload/_ctypes.so
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#4  0x00007f6aff3fb664 in _CallProc ()
   from /usr/lib/python2.6/lib-dynload/_ctypes.so
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#5  0x00007f6aff3f2f33 in ?? () from /usr/lib/python2.6/lib-dynload/_ctypes.so
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#6  0x000000000041c9d7 in PyObject_Call ()
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#7  0x00000000004a48c8 in PyEval_EvalFrameEx ()
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#8  0x00000000004a5ab0 in PyEval_EvalFrameEx ()
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#9  0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#10 0x0000000000535b40 in ?? ()
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#11 0x000000000041c9d7 in PyObject_Call ()
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#12 0x000000000042570f in ?? ()
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#13 0x000000000041c9d7 in PyObject_Call ()
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#14 0x000000000049f053 in PyEval_CallObjectWithKeywords ()
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#15 0x0000000000427a16 in PyInstance_New ()
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#16 0x000000000041c9d7 in PyObject_Call ()
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#17 0x00000000004a48c8 in PyEval_EvalFrameEx ()
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#18 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#19 0x00000000004a4d59 in PyEval_EvalFrameEx ()
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#20 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#21 0x0000000000535c3d in ?? ()
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#22 0x000000000041c9d7 in PyObject_Call ()
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#23 0x00000000004a38a1 in PyEval_EvalFrameEx ()
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#24 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#25 0x0000000000535c3d in ?? ()
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#26 0x000000000041c9d7 in PyObject_Call ()
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#27 0x000000000042570f in ?? ()
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#28 0x000000000041c9d7 in PyObject_Call ()
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#29 0x000000000042499d in ?? ()
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#30 0x000000000041c9d7 in PyObject_Call ()
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#31 0x00000000004a38a1 in PyEval_EvalFrameEx ()
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#32 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#33 0x0000000000535b40 in ?? ()
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#34 0x000000000041c9d7 in PyObject_Call ()
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#35 0x000000000049f053 in PyEval_CallObjectWithKeywords ()
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#36 0x000000000049c866 in ?? ()
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#37 0x00000000004a4f57 in PyEval_EvalFrameEx ()
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#38 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#39 0x0000000000535c3d in ?? ()
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#40 0x000000000041c9d7 in PyObject_Call ()
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#41 0x00000000004a38a1 in PyEval_EvalFrameEx ()
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#42 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#43 0x0000000000535c3d in ?? ()
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#44 0x000000000041c9d7 in PyObject_Call ()
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#45 0x00000000004a38a1 in PyEval_EvalFrameEx ()
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#46 0x00000000004a5ab0 in PyEval_EvalFrameEx ()
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#47 0x00000000004a5ab0 in PyEval_EvalFrameEx ()
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#48 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#49 0x0000000000535b40 in ?? ()
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#50 0x000000000041c9d7 in PyObject_Call ()
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#51 0x000000000042570f in ?? ()
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#52 0x000000000041c9d7 in PyObject_Call ()
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#53 0x000000000047552f in ?? ()
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#54 0x000000000046cd9f in ?? ()
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#55 0x000000000041c9d7 in PyObject_Call ()
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#56 0x00000000004a48c8 in PyEval_EvalFrameEx ()
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#57 0x00000000004a5ab0 in PyEval_EvalFrameEx ()
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#58 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#59 0x0000000000535b40 in ?? ()
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#60 0x000000000041c9d7 in PyObject_Call ()
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#61 0x000000000042570f in ?? ()
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#62 0x000000000041c9d7 in PyObject_Call ()
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#63 0x000000000047552f in ?? ()
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#64 0x000000000046cd9f in ?? ()
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#65 0x000000000041c9d7 in PyObject_Call ()
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#66 0x00000000004a48c8 in PyEval_EvalFrameEx ()
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#67 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#68 0x00000000004a4d59 in PyEval_EvalFrameEx ()
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#69 0x00000000004a5ab0 in PyEval_EvalFrameEx ()
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#70 0x00000000004a5ab0 in PyEval_EvalFrameEx ()
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#71 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
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#72 0x0000000000535b40 in ?? ()
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#73 0x000000000041c9d7 in PyObject_Call ()
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#74 0x000000000042570f in ?? ()
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#75 0x000000000041c9d7 in PyObject_Call ()
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#76 0x000000000049f053 in PyEval_CallObjectWithKeywords ()
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#77 0x00000000004d578a in ?? ()
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#78 0x00007f6b02b41971 in start_thread () from /lib/libpthread.so.0
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#79 0x00007f6b01a1692d in clone () from /lib/libc.so.6
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#80 0x0000000000000000 in ?? ()
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