I am running WordPress 2.0.3. When using Firefox, everything works. However, when using IE to write a new post (and when editing an existing post) the file upload area does not appear, at all. So I cannot upload new files, nor access existing ones. Again, this works perfectly in Firefox on the same exact posts.
I did create a custom theme for the public side of the site, but the WordPress back end I have not changed. Also, I observed this problem in 2.0.2. I was hoping the upgrade to 2.0.3 would fix it, but, alas, no.