Apple DOES listen ... if you bug them enough!!
Strange ... my PPC update was only about 27MB. Anyhow, this update FINALLY solved the problem I was having with the Mac Help and Mail Help menus. After several bug reports and e-mails to Apple, by me and likely several others, I can now click on these Help menus and no longer have a blank Help Viewer screen, or one with the spinning color wheel forever when I clicked on something that did happen to appear!
Great job, Apple! You proved to me yet again that you DO listen to user concerns -- eventually!