[LAU] Firewire latency

Playing around with an Audiofire 12 and I have just found an interesting limitation in latency settings. I can easily set my system up to use the audiofire to use either the alsa drivers or the ffado drivers and have tried both. I found an interesting result: using the alsa driver my minimum latency when using JACK is 256/2. If I try 128/3 (or 128/2) JACK locks up and needs kill -9 to get rid of. Using the FFADO drivers I have been running JACK at 32/2 for over an hour with only 1 xrun for the whole time. So my question for anyone else who has or is using a firewire device is: Do you also have a similar experience? And which distro? I am mainly asking for documentation reasons for Studio-controls -- Len Ovens www.ovenwerks.net