I get the error in the title on the FFXIV launch page. Running Windows 7 64-bit.

Internet is ok (I can get here for example). Tried on multiple PCs. None can login.

The launch page comes up and looks like:
http://oi61.tinypic.com/30xfwg6.jpg

See the missing part on the right? No place for user, password, security token to be entered. After about 2-3 minutes, a window pops up with the following message:
A system error has occurred: -2146697211