AFAIK the segfault was introduced recently.
gcc (SUSE Linux) 4.6.2
GNU Fortran (SUSE Linux) 4.6.2
x86_64 GNU/Linux
Python 2.7.2 (default, Aug 19 2011, 20:41:43) [GCC] on linux2


>>>import scipy
>>> scipy.__version__
'0.12.0.dev-bb436fa'
>>>scipy.test(verbose=10)
...
test_rank3 (test_signaltools.TestLinearFilterObject) ... ok
test_basic (test_signaltools.TestMedFilt) ... ok
Ticket #1124. Ensure this does not segfault. ... Segmentation fault

Nils