Actually, I posted this on Linux forums too but there is possibility that my Perl script is the problem itself, not daemonized part. I added daemon script to show it to give some ideas, if it's wrong you could point it out. But the main problem I ask ( in this board ) is how could I clear the variables I use in my script when I reach the last step before restarting the loop ? or maybe, should I even do that ? or maybe a different guidance would help differently.