Hello, The 1.3.1 version of libtirpc has just been release. In this release the AUTH_DES function declaration have been removed from auth_des.h which will cause future apps not to build when they try to used the unsupported functions The API will be remain stable since the unsupported functions will continue to return an error. The tarball: http://sourceforge.net/projects/libtirpc/files/libtirpc/1.3.1/libtirpc-1.3.1.tar.bz2 Release notes: http://sourceforge.net/projects/libtirpc/files/libtirpc/1.3.1/Release-1.3.1.txt The git tree is at: git://linux-nfs.org/~steved/libtirpc steved.