Hi, I know that numarray is outdated now, but it's too big a job to change to numpy right now. On the offchance that someone can help: After upgrading from numarray-1.3.1 to numarray-1.5.2, we get occasional crashes where python tries to free Py_NONE I'm aware of the NA_FromDimsStridesDescrAndData fix at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=399440 however this doesn't solve the problem here and that particular function doesn't seem to be in our codepath anyway. Any ideas? Thanks -- Daniel Drake Brontes Technologies, A 3M Company