So a kernel update later and my VirtualBox-ose version broke.
However, I found this -- there is a repository with a key for the Sun version.
And it works fine.
ProductiveLinux has this post about getting USB support in VirtualBox under Ibex, and there's also this thread:
Remounting didn't do it for me, but I found I was no longer part of the vboxusers group -- be sure you're part of that.Code:#Make USB Work in Sun VirtualBox none /proc/bus/usb usbfs devgid=46,devmode=664 0 0