I"m having the same issue. There may be something to your prime time idea. I haven't been able to log on for days (since, yeah, about Wendesday). It lets me in, I take 10 steps, and then I get disconnected. However, last night at 1AM, I logged in and played just fine.

I am getting really, really frustrated. Out of my four week free trial, like 3 weeks of that I COULDNT CONNECT TO THE DAMN GAME. I love the game, when I can play it, but all of this crap is just ridiculous. I seriously have never seen service this bad in a game. Ever.