Firewire-ohci was blacklisted? Strange. Here how it is on 12.04
Okay, firewire stack is working now, you have two nodes. One for firewire controler and one for FA-101. The hardware/driver side is good. Now, the software side.
$ cat /etc/modprobe.d/blacklist-firewire.conf
# Select the legacy firewire stack over the new CONFIG_FIREWIRE one.
Don't go to ffado mixer any more, it tends to bug JACK2 - JACK2 won't start after ffado mixer was started. Reboot needed.
Read the post #8 in the thread a gave. I can't tell you anything more but that.