Hi When I try import numpy id(numpy.dot) == id(numpy.core.multiarray.dot) I get True. But I have liblapck.a installed in ~/lib and I put the lines [DEFAULT] library_dirs = /home/myeates/lib include_dirs = /home/myeates/include in site.cfg In fact, when I build and run a sytem trace I see that liblapack.a is being accessed. Any ideas? Mathew