Sorry, there is a mistake in the preceding mail;

One member of us also has identified the cause of the disturbance in /proc/cmdline.
It was syslinux.bin from the package "syslinux 2.11-0.1". He has experimentally made a knoppix4.0.2 iso
image after he exchanged this file with a old syslinux.bin from "syslinux-knoppix 2.04-1".
He could check out that the error in /proc/cmdline did not happen when he booted the modified 4.0.2 CD.
"syslinux.bin" was a wrong file name. "isolinux.bin" is a correct one. So, I write once more:

One member of us also has identified the cause of the disturbance in /proc/cmdline.
It was isolinux.bin from the package "syslinux 2.11-0.1". He has experimentally made a modified
knoppix4.0.2 iso image after he replaced this file with an old isolinux.bin from "syslinux-knoppix 2.04-1".
He assured himself that the error in /proc/cmdline did not occur when he booted from his modified 4.0.2 CD.

I apologize for my mistake.