Have found a few issues with the control panel theme UI in internet explorer 7. For example, WYSIWYG formatting options for textareas in publish channel sections are not displaying. And when you click the Write Mode button at bottom left, the popup screen completely blows up. Also some alignment issues in top navigation tabs and homepage dashboard. Figured you guys were aware of most of these, but wanted to point out a couple specifics, as they were pointed out to me by a client 
Overall, thanks for 2.0pb! Really loving it!
