Rackspace seems to be having issues with DNS (my sites that I have DNS running through Rackspace are down) and their portal login page is not accessible at this time:
https://mycloud.rackspace.com/
Their status page does not indicate any major issues: https://status.rackspace.com/
But many on Twitter have commented: https://twitter.com/search?q=rackspace&src=typed_query&f=live
It is really frustrating that all these major status pages don't seem to actually keep track of the status.