Yes, it is broken, i have fixed it in the next build. It's only ie6 that does this.
I had planned to release 2.9.1 a few weeks ago... but since then i have come across a few small bugs and made some improvements.
Also we are trailing some new code for the previews in the Terayon, so look forward to a fade-in effect and the preview box auto resizing to fit the preview images, previews generated from aspects different to 4:3 used to have background around it...
To Fix This.... open the script.js file, and overwrite the entire oP function with the below. This SHOULD fix it.
//Progress Window
function oP(){window.open('/~progress','Active_Transfers','width=250,height=500,left=100,top=100,scrollbars=1,resizable=1')}