Debian Issues

Confusion about the spirit of the license they are using
drivers/atm/fore200e_firmware_copyright

DFSG violations, which make the kernel sources non-free
drivers/net/tokenring/smctr_firmware.h 
drivers/net/acenic_firmware.h
drivers/net/dgrs_firmware.c
drivers/usb/dabfirmware.h

Rub our noses in it...
drivers/net/starfire_firmware.pl