Windows 7: Outlook Web Access not displaying folders

I have a single PC recently upgraded to Windows 7 running IE9. When I log onto my work e-mail through OWA and un-select "Use webmail lite", the folders along the left side of the screen and various other features of the application disappear. If I select "Use webmail lite", the folders appear, but the other features afforded in the full version are not available.



I downgraded to IE8, and OWA displayed fine until I rebooted the system, then it too lost visibility of the folders and features. What setting am I missing here to get the folders to display right? (The screenshot on the left illustrates the folders in question and the screenshot on the right sows them missing.)