Thank goodness for parallels
Let's just say this is the LAST day I spend trying to get nerd hardware working with OS X. My old USB to RS-232 converter won't work, no matter which .kext I download, modify plist, install... It went so far as to register /dev/tty.usbserial for me, but the "device is busy" message was all I could get when trying to connect to it. Usb networking? Hah! There is one USB networking kext out there for using the Sharp Zaurus device. It looks hackable (if I want to spend a couple of days deciphering a thousand - line c++ file) to make usb networking happen with the gumstix. ... or I could just run ubuntu in parallels and allow it to take over the USB devices. A couple of modprobes with a bone stock ubuntu kernel setup and I was talking to the gumstix over usb networking AND serial. :) Yup. Nerdy things will be happening in linux. AND! I can still use my sexy mac to do it. Maybe I should clear out a partition to do Linux on this thing directly...