I've tried several installs of F19 Alpha TC3 netinst.iso and the ones that haven't failed earlier all seem to get stuck in \performing post-installation setup tasks'. After some time, the X screen seems to go black or grey. The logs really don't give much detail about what's going on. top sometimes shows anaconda at 100%, sometimes not, but always seems to show a long-running 'ext4lazyinit' process. Google on that gives some interesting results suggesting install processes should pass noinit_itable as an ext4 mount option, but that doesn't seem really new, so it may be a red herring. I'll attach the logs from my latest stuck attempt. Note that the logs have not been written to since 00:22; it's now 00:49 and the install process does not appear to have completed. It's been stuck with no apparent progress for that whole 27 minutes. I've had this happen in a VM and on bare metal with both BIOS and UEFI boot.