!@#$% Internet Explorer! Please help!

I'm still fighting with IE and I need a little help from you guys! Ajaxwhois takes forever to load in IE (6 or 7), but not in every other browser I tested it with. I have no idea what it can be due to. I am offering a reward of $40 to the first person who comes up with a solution.

Here's the question on Guruza, along with the reward: http://guruza.com/question/431/reward-40.00.

Your help is very appreciated! Thanks!