Strange Login Redirects

On first accessing the admin dashboard I get a redirect...
http://dcspecialevents.net/wp-login.php?redirect_to=http%3A%2F%2Fdcspecialevents.net%2Fwp-admin%2F&reauth=1

Gateway Timeout

The gateway did not receive a timely response from the upstream server or application.

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On second try I get this which takes me to the login page.

http://dcspecialevents.net/wp-login.php?redirect_to=http%3A%2F%2Fdcspecialevents.net%2Fwp-admin%2F&reauth=1

Same problem in ff, chrome and ie.

I am able to login on my phone (two different browsers) and my other sites are ok. I ran my antivirus but it did not pick up anything.

I no longer get the Gateway timeout but the second link get me to the login but to be safe I did not login.

All I've been doing is security and all important wpmu updates. I've not changed anything at all since the problem. Yesterday I was able to login. Just this morning I got this problem.