evolution, beagle, firstboot all screwy in development updates

I've been trying to get my FC6t3 x86_64 system updated this weekend, and the repos all seem to be corrupted in the vicinity of anything having to do with evolution, beagle, and firstboot. I can't get any of those to apply. Selected bits of the much larger transcript: Downloading Packages: (1/14): libbeagle-0.2.10- 100% |=========================| 42 kB 00:00 http://mirrors.kernel.org/fedora/core/development/x86_64/os/Fedora/RPMS/l...: [Errno -1] Package does not match checksum Trying other mirror. http://ftp.dulug.duke.edu/pub/fedora/linux/core/development/x86_64/os/Fed...: [Errno 9] Requested Range Not Satisfiable Trying other mirror. ... (4/14): beagle-0.2.10-2.f 100% |=========================| 1.2 MB 00:10 http://mirrors.kernel.org/fedora/core/development/x86_64/os/Fedora/RPMS/b...: [Errno -1] Package does not match checksum Trying other mirror. ... Error Downloading Packages: firstboot - 1.4.22-1.noarch: failure: Fedora/RPMS/firstboot-1.4.22-1.noarch.rpm from development: [Errno 256] No more mirrors to try. beagle - 0.2.10-2.fc6.x86_64: failure: Fedora/RPMS/beagle-0.2.10-2.fc6.x86_64.rpm from development: [Errno 256] No more mirrors to try. beagle-gui - 0.2.10-2.fc6.x86_64: failure: Fedora/RPMS/beagle-gui-0.2.10-2.fc6.x86_64.rpm from development: [Errno 256] No more mirrors to try. libbeagle - 0.2.10-2.fc6.x86_64: failure: Fedora/RPMS/libbeagle-0.2.10-2.fc6.x86_64.rpm from development: [Errno 256] No more mirrors to try. beagle-evolution - 0.2.10-2.fc6.x86_64: failure: Fedora/RPMS/beagle-evolution-0.2.10-2.fc6.x86_64.rpm from development: [Errno 256] No more mirrors to try. evolution - 2.8.0-5.fc6.i386: failure: Fedora/RPMS/evolution-2.8.0-5.fc6.i386.rpm from development: [Errno 256] No more mirrors to try.