.commentinfo {
height: 78px;
margin-left: 122px;
margin-top: -83px;
max-width: 450px;
width:expression(450 + "px");
overflow: hidden
}

I guess you're targeting IE that doesn't support max-width. IF you find another way to do the same, it would be good, because these expressions are evaluated many times. This is your last concern though, your expression doesn't access the DOM so it should be fast.

I'd say focus on 1-4 from the list above and see how it goes.

I did a quick look at your YSLow score, there are some recommendations for you. Here are the ones I think will have the most impact:

1. remove this line - <script type="text/javascript" src="/mint/?js"> it results in a 404 and because it's a script, it blocks all other downloads.
2. remove the reference to print.css - also a 404 Not found
3. check if you do need all those scriptaculous files, for example do you really need drag and drop and slider?
4. combine all scripts into one file, then move the script tag right before the
5. gzip the script and the stylesheet (notice singular form) - check here for ideas - http://www.phpied.com/phpbb-front-end-optimization-1-hour-workshop/
6. try spriting some of the background images - use http://www.csssprites.com to make it easier

Let me know if there are any problems and tell me how it loads after you implement these