[quote]"shutdown -P halt" in both runlevels 3 and 4 is just pushing me to init 1 (single user mode).
After reviewing the source for the shutdown program I found that it is written to change the system to runlevel1 and not halt the system. If you wish to actually shutdown the system you can use "shutdown -h now" or poweroff.
but matt, why they changed the command's way of working too?. It is supposed to be common with all distro, right ?[/quote]
In one plain word: no
That's the beauty of opensource: you can change as many things as you like the way you like :)
You've hit one of the things that make Slackware a different distro, that's all :)