>
http://validator.w3.org/>
>I ran the UT's main page through this.
>
>Your currently using HTML 4.1 Transitional.
>
>And there are 132 errors on the page.
>
>I chose to have it validated as HTML5, and you had 9 errors.
>
>That could be because the HTML5 validator is incomplete.
All of those are probably related to the points mentioned in the link you provided in the other messages.