mostly successful install of talkingarchlinux
Your problem with the keypad enter is actually a problem with all
Speakup keypad functions in the 3.4 and 3.5 kernels. In all these
kernels, pressing any Speakup keypad key causes the kernel to crash and
burn, and the system must be hard rebooted in order to get things back
up and running.
There are two possible solutions to the problem. Either use only laptop
layout keys, e.g. capslock enter, or install Linux-lts and edit
syslinux.cfg to point to the linux-lts kernel, e.g. vmlinuz-linux-lts
I'm somewhat at a loss trying to solve the enter to boot problem, but
it's possibly not related to the bootloader. It may help to find out
just how far your system is actually booting before you press enter to
get a talking system. You should be able to navigate the Speakup cursor
above the login prompt to find out any prompt that was printed to the
screen before you pressed enter to get it talking. Hope this helps.