Just did some troubleshooting over text with chris about this stupid comcast popup I was getting on startup asking me to connect to xfinitywifi. Long story short - it HAD been connecting me to xfinitywifi, and it seems the wifi was taking precedence over my ethernet connection because I deleted the network and disabled wifi a second ago, and my net speed seems, like, a bajillion times faster.
Comcast can eat a bag of dicks.
Yeah, I've read that in a lot of cases Comcast will run open wifi on subscribers' connections so they can offer public hotspots to their customers. I'd rip that shit out if I could.