Hmmm... An update if it helps you (sorry for the second post but I felt this was worthy). It appears to be a bug relating to browser compatibility. I even see a score I made (81589 - currently number 6 - I remember making that score) on the list with no username. It appears the Tetris game only works properly with Microsoft Internet Explorer (or at least it doesn't work with Mozilla, I haven't tried Opera or Konqueror). For what it's worth, it's sending me to the same page for high scores that it does in Mozilla, only I'm being told I'm banned from seeing it in Mozilla. Also, the "high score" part works in IE and not Mozilla, and in IE the intro says "DBSTalk presents". I wonder if this has something to do with that new "scriptable" Flash, would this be so Scott? If so - I believe there's a Mozilla Flash update I'll look into getting for it.
-----UPDATE!!!-----
Unfortunately (because it would be an easy fix) it appears my guess about it being the version of Flash not being scriptable was wrong. Apparently starting with 6.0 r40 the Flash plugin (as opposed to the ActiveX) was fully scriptable, and I have 6.0r47. Oh well, it was a decent guess

As an additional note, it doesn't work in Opera either (again, Flash player version is 6.0 r47 - the latest)