It's not you, it's Mythic Entertainment that has taken the Warhammer Online servers down today. A new Game Update is being patched to the servers as we speak. This downtime should be complete by early afternoon.
UPDATE: Servers are back online. Go play!
At 6AM EDT all North American servers will be brought down to begin the 1.0.3 update. Oceanic servers will follow at 9AM EDT. We anticipate all servers to be online by 2PM EDT.
1.0.3 has some great changes in store and we encourage you to check out the patch notes. As always keep an eye on the Herald for up to date news and information!