This looks like it should be in the bug reports forum to me, and I'm not sure the link to Mikes input applies to what is in post #1 at this time - my guess is that post #1 was edited sometime after post #2 was made.
The first shows an iframe popup of some sort. I can reproduce that within fire fox, IE 8 and Opera. That link to other post was edit several times and did not leave the original information, but you can reproduce this in the same way.
Opera Browser http://www.youtube.com/watch?v=nbIA5lQdCQY