[...] everything's working except full duplex audio on my Delta 66.
Have you tried the ALSA drivers?
Ah, I see you mean alsa 0.5.10b and not 0.9beta3. Yes, everything works now, though I notice that I get a lot of DIO errors as PD apparently tries to resync occasionally. Is this normal? (I'm running under Linux with realtime priority and a realtime-patched 2.4 kernel.)
Be it here recorded that I like Pd enough to spend an entire day replacing a perfectly stable driver with two different completely unfamiliar pre-1.0 drivers. :)
Thanks, everyone!
I am the kitten that runs circles around your angst.