Your GPS track suggest that you breeze through them at an impressive speed in places :)
I'm not sure exactly where you're looking at, but I really don't, I'm a complete-stop-and-shift-down-to-first-gear kind of guy, and I get kind of annoyed when I see people rolling through them. In fact, that happened a couple of times yesterday (one a stop sign and the other a right turn on a red light) when I was shaking my head at somebody who appeared oblivious to the traffic rules. But not as annoyed as when I was getting close to home and a guy was coming up Leominster Road at pretty high speed on a motorcycle doing a wheelie. And not nearly as upset as I was when a motorcycle (dirt bike, probably unregistered) was moving at very high speed with no headlight in the dark through the city when kids were out trick or treating last week.
Anyway, I think the sampling rate of the GPS just doesn't capture the stops.
Try driving around our army base where everyone exaggerates the stops because if you don't stop for three seconds, you're likely to be caught by the MPs (shame it doesn't translate out into the real world though).