Folks: Dr. Ryan Golhar had developed RPMs for clustalw/clustalx . We updated the SPEC files to build independent of other RPMs, and built x86_64 and a few others. Feel free to pick up Ryan's original RPMs and the updated source and binary RPMs at http://downloads.scalableinformatics.com/downloads/clustalx/ As usual, please email feedback on the packaging or compiler bugs to us. If you have trouble with the binary RPMs, please try building from source. Joe -- Joseph Landman, Ph.D Scalable Informatics LLC, email: landman@scalableinformatics.com web : http://scalableinformatics.com phone: +1 734 612 4615