I see jdk-1.6.0_29-fcs rpms in http://ftp.scientificlinux.org/linux/scientific/5rolling/testing/i386/java/ http://ftp.scientificlinux.org/linux/scientific/5rolling/testing/x86_64/java/ I note that the previous 32bit jdk - jdk-1.6.0_26-fcs.i586.rpm - was signed (though the 64bit one was not), but the _29 rpm is not. I've forgotten how Troy managed to sign the 32bit version but this email from the list might give a clue: [log in to unmask]" target="_blank">http:[log in to unmask] -- Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge [log in to unmask] http://www.dpmms.cam.ac.uk/~werdna