Hi Killerkaninchen

Try:

# rm /bin/sh && ln -s /bin/busybox /bin/sh

Why remove /bin/sh and why link busybox to /bin/sh ?

By default slitaz use the shell in busybox.
This is what you had before you installed zsh.
/bin/sh is a symbolic link that points to whatever default shell you choose to use.
From zsh receipt:
echo "Processing post-install commands..."
sh=`readlink $root/bin/sh`
if [ ! "$sh" = "/bin/zsh" ]; then
echo ""
echo "**** Actual SH link : $sh"
echo ""
echo -n "Do you want Zsh for /bin/sh (y/N) ? : "; read anser
if [ "$anser" == "y" ]; then
echo ""
echo -n "Removin sh link to make a new one pointing on /bin/zsh..."
rm $root/bin/sh && ln -s /bin/zsh $root/bin/sh
status
else
echo ""
echo "Leaving /bin/sh to : $sh"


This from bash receipt must be added to the end of zsh receipt to restablish link when zsh is removed.
# Restore a valid sh link if needed.
pre_remove()
{
sh=`readlink /bin/sh`
if [ ! "$sh" = "busybox" ]; then
rm /bin/sh &&
ln -s /bin/busybox /bin/sh
fi
}

The zsh.tazpkg needs to be reworked. None of this addresses the wierd text problems you were having.

OK. I tried to boot Slitaz to remove the link and it gives me:

cannot run '/etc/init.d/rcS' : No such file or directory

and

(none) login:

Tomorrow I will chroot from a live-cd into Slitaz and do what Linea said. I think this will also correct the login problem...

I tell you tomorrow...
Killerkaninchen

So...
I did the command from my Ubuntu-Installation but it didn't correct the login problem.
Then I chrooted from a Slitaz-Live-CD and know it works...

Thanks for the command and the explanation!

Killerkaninchen