Piet have you read through any of these posts?
http://wow-blue.com/?search=latency
Yes Will, I have but the fact is that during the day on my Mweb account(4mb shapped uncapped) I play fine at a nice 230-300 ping, no hic-ups, no issues. As soon as 6PM hits I get a dc and then my latency is 20k MS.
Now no offense but that to me does not sound like a Blizz issue, yes they might have some issues with the packets and how it gets seen etc etc, which they are also addressing, BUT I do not believe that the fact that the game latency is fine during the day and after 6PM everything goes south is due to Blizz, they did HUGE changes compared to what it was and yes there will be impacts but not like this.
Just another pointer, I had NO issues after the patch, nothing, and after there was some issues at the Mweb side, after the Authentication error a month back, I reconnected and all was still fine.....till 6PM and BAM!! it went south.
I do apologize if I sound frustrated.
and another thing, from what I read on Blizz's support site, it seems that ISP's can contact them w.r.t setting up monitoring for the packages, breaking down the package to see what is going on etc etc(don't remember the link....trying to find it)
again, I do apologize if I sound rude or frustrated, it is not my intention, but from all the evidence I gathered thus far I do not see it being WoW or Blizz related.....