The same thing happened to me, and I don't get that "cheery welcome back message" until the 2nd time I log in. It really makes a person feel unloved here*sob*.

Actually, the first thought that went through my mind was that I was kicked out, so I was relieved to find out that it is just a bug.

It does get annoying, though and I have experienced the pages loading slower and slower as time progresses. It is really nothing more than an inconvenience to my time, but I thought I should mention an agreeance.