Hi, I have the same problem.
What I just found out is that screen flickering can be solved by reverting back to the old mesa (I think it's mesa). What you have probably done is that you installed Slackware directly with the patches.
I'll post an update when I solve my problem.
I also thought it's hal related, and it still could be. But I did install everything, I only replaced packages with slackware patches and did some other minor changes (like pam).
EDIT: It's not mesa. I just tried without the new mesa package, still the same result, I just got rid from the screen flickering, which you obviously don't have, but my cursor also flickers one way or another.
Could you please post a list of your packages? Like this:
cd /var/log/packages; ls -t > list
And then upload list somewhere.
If you make progress, please notify me - I will be very thankful.
Last edited by Ivshti; 10-26-2009 at 05:20 PM.