> > ... fftw is not at all part of CentOS ... or RHEL ... Sorry, my mistake! The package fftw-3.1.1-1.el4 comes from the kde- redhat add-on repo: $ apt-cache policy fftw fftw: Installed: 2.1.5-4.2.el4.rf Candidate: 3.1.1-1.el4 Version Table: 3.1.1-1.el4 0 500 http://apt.kde-redhat.org kde-redhat/centos/4.3/i386/ stable pkglist *** 2.1.5-4.2.el4.rf 0 So please be aware that kde-redhat is not compatible with RPMforge for the time being! (Until they rename it fftw3-3.1.1-1.el4) -- Morten