I don't read anything about this yet, so : # yum update ... Updating: libtirpc x86_64 0.1.10-7.fc11 fedora nfs-utils x86_64 1:1.1.5-6.fc11 fedora nfs-utils-lib x86_64 1.1.4-6.fc11 fedora rpcbind x86_64 0.1.7-3.fc11 fedora ... Package nfs-utils-lib-1.1.4-6.fc11.x86_64.rpm is not signed Hope this help.