Eep...you got stuck on level3's car2 lines in Montreal. See those show up a lot in threads where people are having problems (and not just for XIV either).

You got a nice capture with that one...would definately look into getting that one to your ISP's tier3 team. It is bad enough you caught a 60 to 200+ swing at the same hop...but notice also that both those hops with the long response times are showing the same address. Something odd is going on there that someone needs to address or route you around.