Yes, this is the only username I've ever had. Nothing has changed except my laptop got a new hard drive. I tried Chrome and Safari too and the WP interface after signing in appears the same on all of them.
On the menu bar, from left, the WordPress "W" under which the choices are Reader, Notifications, Create a Blog, Freshly Pressed, and Settings.
Next to that, think + do, which is where I used to be able to access the dashboard and post new content. Now I only have Shortlink, Random Post, Theme, and Report this Content.
It almost seems like WordPress doesn't believe I'm an approved administrator for the site, when in fact I'm the only administrator.
On the right side of the screen, there is an icon to view all notifications, a long screen name I've never seen before "akismet-f1ed11a6b498…" under which I can Find Friends, Create a Blog, Help, or Sign Out.
And on the extreme right there is an icon for Search.