Yes, I have a usb2 controller card, and a usb2 hard disk (Fujitsu handy drive 40 GB), and in redhat9 it has high speed like a usb2 (perhaps 10 MB/s), and module ehci-usb is loaded.
In last knoppix cd's, this drive runs well, but it has only usb1.1 speed. It is very slowly if you use this as a primary drive and/or open directories on it. Only uhci-usb module are loaded (not ehci-usb).

I have read that redhat have a kernel 2.4.21-pre that has a patch from kernel 2.5 and thus it's speed.

Mmmm. Anyway, i don't know if knoppix have usb2 compiled in kernel or as a module, or not. It's seems not.

I have found part of the answer in knoppix mailing list:
http://mailman.linuxtag.org/pipermai...il/002676.html


Although i have said, i think that knoppix is a superb linux distribution.