Probably not important to most, but when you set 'Use Internet' to 'No', that used to mean no attempts to contact the internet.
Today, I kept seeing my CPU hit 25% while in rest-state (normally 3%) with internet activity. So I checked to see who was the offender.
Logos.
It has two periods of activity on internet activation, and another with deactivation. Of course (as usual) this is unique to Logos. My other software are nice and behaved.
Plus I'm re-booting since 'LeakyBoy' (aka Logos) is now at 2g virtual and 1.4g private memory. He's my worst leaker. Puts 'sieve' to shame. I'll be happy when Logos does their 64bit thing ... that'll let him leak with wild abandon (since that's about the best the coders are going to manage).