[support] Unable to login to site or add products to cart in IE6

[Steve Edwards]

As do most of you, I have a deep and abiding love for IE6, and this 
issue just deepens that love. For some reason, I am unable to add 
products to my cart (using Ubercart) or even sign in to my account in 
IE6 (all things I can do just fine in IE7, FF, Safari, Opera, and any 
other browser known to man). When I try to log in, I just get the 
"Access denied - You are not authorized to access this page" message. 
When I try to add a product to my cart, it just displays the "There are 
no products in your shopping cart" message. I've looked at settings in 
IE6 and can't see anything that would prohibit this, such as cookies 
being blocked. Based on some suggestions from IRC last night, I tried 
using a different theme and enabling CSS aggregation, but that didn't 
make a difference.

Does anybody have any idea as to what would cause this?

Thanks.