The rebooting thing is always my first option too, I'm connected through cable, since I'm not a fan of the wireless. I already tried those stuffs mentioned in the blog, my ping is not that "bad", taking in mind I'm pretty far away. Getting a ping around 150-200, and in game has been always unnoticiable.
I will ask my neighboor his laptop to check if I get the same error, and lastly I could do some Window reinstall, since I got it fill with trash stuffs anyway. I will be killing 2 shots with one bird.
I'll update it later.