Environment: Trisquel Mini 7 Belenos at current maintenance levels as of this report
Problem: Configuring manual IPv4 settings in Network Manager whether while a connection is established or while disconnected results in the settings being lost when the connection is (re)enabled. As a result the settings return to their default DHCP setting.
Not present in Lubuntu 14.04.1 updated to current and at same network-manager-gnome level (0.9.8.8-0ubuntu4.3) as present Belenos Beta. Still present in Trisquel Mini at today's service level.
Still present in 20141014 iso. Downloading a copy of upstream to see if it is simply unreported there rather than a Trisquel Mini bug.
Just applies to wired connections it turns out. There's no sign of the bug upstream on the web or bug tracking systems and IIRC the problem is a regression vs Toutatis.