Hello, Recently I upgraded to netCDF 4.4.0 from netCDF 4.3.2. In both cases the install directory was specified to be /usr/local/lib When I compile my fortran program using ifort I get this warning ld: warning : libnetcdf.so.7 needed by /usr/local/lib/libnetcdff.so may conflict with libnetcdf.so.11. So can I go ahead and remove the older versions from the lib directory and recompile whatever program I am using to the recent version of netCDF or is there a way to massage this without removing the different versions? Maybe someone has a script to remove the older version of netCDF i,e, uninstall version x? :-) Ashwin.