Dear Anonymous Monk:

My system uses the environment modules system:

http://modules.sourceforge.net/

In my .cshrc file I was loading several modules. When I removed all module loads and re-installed Perl 5.8.9 I was successful installing the DateTime module. I had several modules loaded (including Portland compiler, MPICH2, HDF, NETCDF, and IDL). - hard to say which one was the culprit.

Many thanks, Kevin Doty