I think I can say something new about this red X of death issue.
I did have this problem since last weekend, it is impossible to play, things get worse in WZ and fleet. I tried the virtualization of the caches, i rdid reset everythig reseteable, i tried the firewall, i even tried a brand new account... nothing worked until I tried a paid proxy in trial mode, this one: http://www.battleping.com/
While it is active I have the usual ping I had before and everything goes OK for the 20 minutes in this trial mode.
I wanted you to know because maybe someone here could figure out what is happening. This is not an acceptable fix, it is just, I hope, a clue in order to fox this problem BW have been ignoring for som long.