Ok, that's interesting, very interesting. I will pay attention next time it crashes (of course it did not went you wait it to crash
Thanks all of you !
Well it crash that night. At that moment "netstat" did not report the use of port 4662 (???), "netstat -ta | grep 4662" send nothing.
So i launch again lmule and got the error 4662 unreachable.
I quit. sent the command "netstat -ta | grep 4662" until no one use the port 4662. Then, i block the port 4662 in iptables and restart that one. And just after, reopen the port 4662 and restart iptables. I then go into the lmule directory in my user home and delete the con file (with size 0kb). I also delete the file in /temp/orbit-"myuser" the con file that where changed when i quit lmule.
Consequence, i start lmule again and got a high ID.
Maybe it was something to do with con files (created for each port opened).
I will try to narrow my suspects later. It seems i solve my problem (i'll be sure the next time) and i hope these lines will help others.