Didnt know there are such problems... regarding raspbian... someone wrote that it can make problems too and suggested arch linux with the first link i posted.
Yes Arch current seems to have a working libusb (well it does for me - with my test program in the link below)
The Raspbian fix is to use a different libusb as I describe here (switching libusb for me goes from 'fail' to 'working'):
https://bitcointalk.org/index.php?topic=28402.msg2817682#msg2817682