Hello, It seems there is both an rhpl.arch and a yum.rpmUtils.arch containing "the same code". Any idea why this is? Note the latest yum.rpmUtils.arch seems to be more up-to-date? Since it provides some more functions: isMultiLibArch, getBestArchFromList, getArchList, getBaseArch. The rest is identical. Anyway, it seems this file contains a list of supported arches, so I'm guessing this is my best entry for getting support for installing x86_586 MontaVista Linux packages (more on this tomorrow). Best regards, Jeroen Janssen