DNS troubleshooting

Is this why it's lagging?
Sometimes DNS problems can cause issues with games and websites. It's more evident when patching.

"Unable to connect" errors
You may receive "Unable to connect" in WoW but are somehow able to view this article.

Try the following:
 * Open a command prompt.
 * For the North American version, type nslookup us.logon.worldofwarcraft.com and hit Enter.
 * For the European version, type nslookup eu.logon.worldofwarcraft.com and hit Enter.


 * If it returns an error saying "timed out". your ISP's DNS server may be down.

Launcher timing out
If the launcher sits at 0% and does not move at all (hourglass or spinny thing) you may want to scan for malicious software first.
 * Open the launcher.log file in your World of Warcraft\logs folder.
 * Scroll to the bottom and look for error messages.

How can it be fixed?
Using an alternate or public DNS provider can fix these issues (or test if DNS is the real issue).

The websites below have instructions on how to use these services.

Google Public DNS
http://code.google.com/speed/public-dns/

OpenDNS
http://www.opendns.com/