You might not find your answer for #3 from any Perl documentation ... but you most certainly will from Advanced Programming in the Unix Environment by the late and great Stevens. I don't have my copy with me right now, but if my memory serves me correct, it has a wonderful recipe for daemonization which covers all the points Zaxo mentioned.

UPDATE: Here. Let me hold a mirror up to you. See? You are being the troll. If you want to know more about me, you can always read some of these: http://perlmonks.com/index.pl?orderby=hr&node_id=6364&user=jeffa. Wow. I hope you learned your lesson here, shake it off, and learn how to take constructive criticism. We are here to help. Why are you here?

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)