.
Greetings, All.

With earlier Knoppix 6s and 7s, I became accustomed to making
small changes to certain system files to achieve some modest LiveUSB
'improvements'. For some reason, I seem to be locked out of the
ability to just go in and modify these files as I used to do.

Two specific files that are resisting my efforts are:
/etc/xdg/lxsession/LXDE/autostart (I want to add iceweasel), and
/etc/syslog-knoppix.conf (I want to add /var/log/syslog)

What has changed that I should know about? TIA.