Lordaeron - Constants lag issues in the game

Greetings

I am creating this topic to report that both me, and the great majority of the members of the guild where I am (because we are almost all in the American continent) had since the last week and are currently having problems with delays (and rarely disconnection) in the game, not that we all at once, but no longer constant for each, being not only us, but also to those who reside in Spain.

Usually the delays are between 20 ~ 30 seconds, which in any fight/battle can result fatal for everyone else.

I wanted to know if this may be due to our Internet providers, or any other change has been made in the server and we are affected, and if there is any way that ourselves can solve it, either because of an addon or other file all have in common that could be the problem.

Thanks in advance.

Maybe related: http://forum.warmane.com/showthread.php?t=329978