I have a python module that imports a module generated with swig. When I 
try to call the show() function of matplotlib later in that module, 
python crashes. When I comment the imported swig module out, everything 
works fine. A backtrace obtained by debugging with gdb is shown below. 
Does anyone have a clue?

Thread [1] (Suspended: Signal 'SIGSEGV' received. Description: 
Segmentation fault.)
     27 __cxa_allocate_exception()  0xb74e324c
     26 py_to_agg_transformation_matrix() 
/local/vollmer/opt/matplotlib-0.99.1.1/src/agg_py_transforms.cpp:20 
0xb4e11d88
     25 _path_module::update_path_extents() src/path.cpp:346 0xb4e19b3d
     24 Py::ExtensionModule<_path_module>::invoke_method_varargs()  
0xb4e26451
     23 method_varargs_call_handler() 
/local/vollmer/opt/matplotlib-0.99.1.1/CXX/cxx_extensions.cxx:1403 
0xb4e0d51c
     22 PyCFunction_Call()  0xb7ed5875
     21 PyEval_EvalFrameEx()  0xb7f28485
     20 PyEval_EvalCodeEx()  0xb7f2dd7f
     19 PyEval_EvalFrameEx()  0xb7f27574
     18 PyEval_EvalCodeEx()  0xb7f2db9b
     17 PyEval_EvalFrameEx()  0xb7f27574
     16 PyEval_EvalCodeEx()  0xb7f2dd7f
     15 PyEval_EvalFrameEx()  0xb7f27574
     14 PyEval_EvalCodeEx()  0xb7f2db9b
     13 <symbol is not available> 0xb7ec2c32
     12 PyObject_Call()  0xb7e9dc1c
     11 PyEval_EvalFrameEx()  0xb7f29242
     10 PyEval_EvalCodeEx()  0xb7f2db9b
     9 PyEval_EvalFrameEx()  0xb7f27574
     8 PyEval_EvalCodeEx()  0xb7f2dd7f
     7 PyEval_EvalCode()  0xb7f25c73
     6 <symbol is not available> 0xb7f47adc
     5 PyRun_FileExFlags()  0xb7f47b9b
     4 PyRun_SimpleFileExFlags()  0xb7f4858f
     3 PyRun_AnyFileExFlags()  0xb7f48818
     2 Py_Main()  0xb7f54e12
     1 main()  0x08048692


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