yes zeren i have the same thing

yeah it seems that was most peoples orginal issues, then they tried fixing it which just turned into a whole new issue...

http://www.dbocom.com/forum/showthread.php?t=21469

go here, it helped me get into the game

A friend of mine, and I, both used the "ipconfig/flushdns" and it seems to be completely redownloading all of the patches from the beginning, and no Launcher error before or after. And YES we are STILL using the launcher without error. We will post the updates to if the problem was fixed asap.

EDIT: Use this if all else fails, including reinstall.