This is just a guess, but since this is the second time I have seen that UI setup in the past month or two, my guess would be it is the custom UI of the person who he downloaded and is loading whatever the free Blend file was (can't remember, but I downloaded it to check out) without unchecking the load UI checkbox.

It's not a virus or anything to do with downloading/installing -- He just keeps overwriting his UI on every load.

I remember that header, because my first thought was why would you name one of your scene tabs 'Hacker'? -- Maybe a rename of the Scripting Tab because he likes to hack the files...

Like I said, this is just a guess, and I could be way off, but it something you guys did not consider in trying to help out VolcanicMink with this issue.

Hope this helps -- If not, please disregard.