[Numpy-discussion] When building with --prefix /usr/local numpy not detected by python

On 64-bit ubuntu 9.04 and Python 2.6, I built numpy from source against atlas and lapack (everything 64bit). To install, I used: sudo python setup.py install --prefix /usr/local but then python doesnt find the numpy module, even though it exists in /usr/local/lib/python2.6/site-packages Do I need to add a .pth file somewhere to tell python about numpy? I thought that would be done during the install command Cheers! Chris