I am curious as to why Dfans hasn't put up a post on their front page about this yet? I know I am not alone when I say this but for the past week Blizz servers have been horrid. 1000-2000ms until you start a new game and hopefully you are fixed. They keep saying its your ISP yet if you check the bnet forums there are dozens of posts about this same issue with many replies to them. So either ALL of our ISP's are acting up ooooooooor It's blizzards servers. This obviously isn't effecting everyone and it seems to be random times (seems real bad around 8-9pm est) I constantly have people in game complaining and logging off
Not sure what region you're in, so I'm not sure if your issue is the same as the issue that US users are experiencing.
The issue exists somewhere between the user's connection and Blizzard's servers. It's not actually with Blizzard's servers, but one of the jumps between those two points. This was a huge issue just before launch with Time Warner subscribers in the Northeast US that has since been fixed, and now users with other ISPs are having the same issue or similar issues. If the issue exists outside of Blizzard's server and it's a matter of how your ISP is currently routing traffic, Blizzard can't do anything about that, and most ISPs are reluctant to accept blame or that's always been my experience.
So what you end up with is two companies pointing fingers at each other and users taking sides.
Blizzard actually attempts to work with ISPs when this happens, as opposed to a company like EA that just says "eh whatever."