I had this a couple of times too today. Once when I was just looking at account info, and one when I clicked the link to make a domain pointer. After that it was all good.
In my case it probably had something to do with ddos attacks along the way or hickups in the network of my ISP. Happens very rarely.
Yes, I am also seeing the same problem and really this is really Irritating me, specially when I required most. Why is it happening, I don't have the answer.