I was so glad to find your problem, because I have exactly the same issue. No solution, but at least I'm not the only one out there. I too had decided that the problem was 32-bit programs running on my Windows 7 x64 computer: for example, when I run IE8 32-bit, none of the menu items appear on the top, and there are no labels for any of the buttons (home, print, etc.). But when I open IE8 x64, all is well.
Might someone have some ideas? I've gone back to find a Microsoft article on this problem in pre-Win 7 programs (Article ID: 831430 - Last Review: February 28, 2008 - Revision: 5.3) but no luck.
The problem emerged after a system restore (necessary when an update to Spyware Doctor with antivirus 8 crashed the system entirely

), and reinstalling some of the programs seems to eliminate the problem but not entirely.
Am in need of ideas.
Thanks.