I've had a problem for a while where I'd attempt to log in on my main, the blue bar would complete and then I would disconnect from server. To get around this, I would log onto an alt with all addons disabled in the middle of nowhere. This usually worked, and I could then log out, and log back in on my main. Frustrating to have to do, but it worked (I also noticed that every time this occurred I would lose all of my private chat channels as well and have to rejoin them).
As of the last two weeks, I've been unable to login even using this method. Logging onto the alt also results in the completion of the blue bar followed by a disconnect. At times when I have been able to successfully log in, activities such as entering an instance or battleground (caused a loading screen) would result in a blue bar and a dc, and once again i'd be unable to play. But otherwise gameplay is perfect as usual, I sit on about 250ms and 60fps.
I thought the problem was time (network intensity) based, because often I could log in perfectly fine in the morning and not at night, however I have not been able to log in at any time on my main recently. I have been stuck in ICC for the past 4 days.
I'm sitting on 100mb/s fibre line.
Occasionally straight after a reboot i can log in, however any other instances of wow after the first usually result in the same problem.
A friend of mine who plays on the same network as I (college) occasionally has similar problems.
*** This is different to the other problem where people experience extra long loading screens but are then able to log in. In this situation, loading bar takes about as long as normal, followed by a DC a few second later.
Anything you could do to help would be incredibly appreciated, i'm sick and tired of being unable to raid and making excuses to my guild.
Thanks for your time, Moon.