Hi Connie, Troy et al., I just noticed that SL5 has numpy version 1.0.4-1, whereas EPEL's numpy is now at 1.2.1-2.el5. EPEL also has a version of matplotlib that requires features of the newer numpy (numpy.ma), but without having a proper version in the rpm requirement. This gives problems on all nodes that use protectbase, since they will not update the version of numpy coming from SL5. Can you provide a newer numpy version in SL to fix this problem? I guess using the epel version would be a good move. Cheers, Matthias