Hello Werner, and thanks for the quick reply.

No, I didn't remove anything, and I've installed Knoppix 6.7.1 several times with the result always being the same, no nm-applet icon in the panel. Following your instructions, I find that the "System Tray" is already in the panel. In (Panel Preferences / Panel Applets) from the bottom, I have (Digital Clock, CPU Usage Monitor, System Tray. Volume Control, ...).

Some additional info: When I enter "ps aux" in a terminal session, immediately after boot, but before manually starting nm-applet, "nm-applet" DOES NOT appear in the list of processes. After I enter "nm-applet &" to manually start nm-applet, "nm-applet" DOES appear in the list of processes. Apparently, nm-applet is not being launched automatically.

Is it possible that the failure to launch nm-applet is an i586 issue?