My tweaks compilation, with much thanks to those who posted instructions, and some new useless services discovered after some research.
Firmware
v03.04.01-230
More useless services disabled for those who only need Samba and LAN. (no cloud or USB). Renaming the service from S### to K### in /etc/rc2.d is the easiest way, I’ve discovered. No messing about with CHMOD or stopping services manually.
Disable IPV6
You can disable it from /etc/sysctl.conf with these lines:
net.ipv6.conf.eth0.disable_ipv6=1
net.ipv6.conf.all.disable_ipv6=1
net.ipv6.conf.default.disable_ipv6=1
net.ipv6.conf.lo.disable_ipv6=1
