Thank you for reply.
So, a new file had just modified the slim.conf. I compared file to file from the tarball vs my files, just to make sure they did'n break configuration.
In the end, I just edited my /etc/slim.conf file, mainly deleting the /X11/ references that were allmost the only differences between this old slim.conf vs the new one from the link you just gave me.
Except for that, I just made sure the old slim.config matches the new one.
Apart from that, I found two interesting lines that I thought could solve two more issues:
# Activate numlock when slim starts. Valid values: on|off
# Hide the mouse cursor (note: does not work with some WMs).
# Valid values: true|false
In the laptop, NumLock always stays on just after login (I want it off, there are letter keys with number on them, it's a hassle deactivate numlock just to write--). AND the mouse cursor still dissapears after two (I guess only one) second. -(there is no #unclutter line in icewm which I use, fluxbox has the line).
Either way, neither editing those lines didn't help.
And the slim.template file in /usr/..... seems to no have any effect in this or no help.
More help is apreciated.+