Segmentation fault when using openmpi

I have been trying to use openmpi for two different projects. On both, we swig the c source code and import it in python. These packages are dolfin, which we develop where I work, and the other is trilinos. In both cases, the output looks something like:
[multiboot:14707] *** Process received signal ***
[multiboot:14707] Signal: Segmentation fault (11)
[multiboot:14707] Signal code: Address not mapped (1)
[multiboot:14707] Failing at address: 0x8854004
[multiboot:14707] [ 0] [0xb7fbd440]
[multiboot:14707] [ 1] /usr/lib/libopen-pal.so.0(free+0xc4) [0xb5b6bae4]
[multiboot:14707] [ 2] /usr/lib/libopen-pal.so.0(mca_base_components_open+0x7f) [0xb5b5aabf]
[multiboot:14707] [ 3] /usr/lib/libopen-pal.so.0(opal_memory_base_open+0x44) [0xb5b6a3c4]
[multiboot:14707] [ 4] /usr/lib/libopen-pal.so.0(opal_init+0x9a) [0xb5b4f63a]
[multiboot:14707] [ 5] /usr/lib/libmpi.so.0(ompi_mpi_init+0x19) [0xb5c1e2b9]
[multiboot:14707] [ 6] /usr/lib/libmpi.so.0(MPI_Init+0xe7) [0xb5c41587]
[multiboot:14707] [ 7] /usr/lib/libpetsc.so.2.3.3(PetscInitialize+0x251) [0xb68c28ce]
[multiboot:14707] [ 8] /tmp/lib/libdolfin.so(_ZN6dolfin17SubSystemsManager9initPETScEiPPcb+0x98) [0xb5dea2c8]
[multiboot:14707] [ 9] /tmp/lib/libdolfin.so(_ZN6dolfin17SubSystemsManager9initPETScEv+0xaf) [0xb5dea44f]
[multiboot:14707] [10] /tmp/lib/libdolfin.so(_ZN6dolfin11PETScMatrixC1ENS0_4TypeE+0x27) [0xb5ddf3d7]
[multiboot:14707] [11] /tmp/lib/python2.5/site-packages/dolfin/_dolfin.so [0xb6ffa1ab]
[multiboot:14707] [12] python(PyObject_Call+0x27) [0x805cb37]
[multiboot:14707] [13] python(PyEval_EvalFrameEx+0x4064) [0x80c7ce4]
[multiboot:14707] [14] python(PyEval_EvalCodeEx+0x6e7) [0x80cb0d7]
[multiboot:14707] [15] python [0x8113430]
[multiboot:14707] [16] python(PyObject_Call+0x27) [0x805cb37]
[multiboot:14707] [17] python [0x8062b9b]
[multiboot:14707] [18] python(PyObject_Call+0x27) [0x805cb37]
[multiboot:14707] [19] python [0x809d26b]
[multiboot:14707] [20] python [0x809ee64]
[multiboot:14707] [21] python(PyObject_Call+0x27) [0x805cb37]
[multiboot:14707] [22] python(PyEval_EvalFrameEx+0x3d07) [0x80c7987]
[multiboot:14707] [23] python(PyEval_EvalCodeEx+0x6e7) [0x80cb0d7]
[multiboot:14707] [24] python(PyEval_EvalFrameEx+0x565e) [0x80c92de]
[multiboot:14707] [25] python(PyEval_EvalCodeEx+0x6e7) [0x80cb0d7]
[multiboot:14707] [26] python(PyEval_EvalCode+0x57) [0x80cb227]
[multiboot:14707] [27] python(PyRun_FileExFlags+0xf8) [0x80ea6d8]
[multiboot:14707] [28] python(PyRun_SimpleFileExFlags+0x199) [0x80ea979]
[multiboot:14707] [29] python(Py_Main+0xa35) [0x8059335]
[multiboot:14707] *** End of error message ***
Segmentation fault

When using the packages from debian sid, which uses version 1.2.6, it works. The weird thing is that if I apt-get source the code from ubuntu, and build the packages myself, it works as well. What can be done?

ilmar