Jepp, you're right.
When I see my command hang and run the script twice, the hanging nvram command gets killed.
I installed the script now as cron as recommended and will observe over the next days it that makes a change.
Thanks for that
The only thing which still bothers me now is that the admin UI keeps hanging in these cases, no matter what.
Also when I do a 'service restart_httpd', it does not make a difference.
The only way to help seems to be a reboot...
I have to admit, though, that I tested that before installing the cron.
In other words: when my nvram command hangs, the admin UI gets timeouts, too... the script does kill my nvram command but does not fix the ui.
Also, the script reports zero hanging commands.
Can you make any sense of this?
Thanks, Markus