The MikeBook has been receiving tons of app upgrades due to Lion (haven't upgraded yet; waiting a few months for the bugs to shake out).

In general, the app upgrades have caused no problem except for Safari, which disabled the Page Up, Page Down, Home and End keys. I mean...what?? Sorry, Apple, but I don't have a Magic Trackpad, and I still use my quaint little keyboard to navigate through my web pages.

Fortunately, a poster to this thread on the Apple support forum provided the secret handshake:

• COMMAND UP ARROW takes you to top of page
• COMMAND DOWNARROW takes you to bottom of page
• OPTION UPARROW takes you up a page
• OPTION DOWNARROW takes you down a page

So, using the wonderfulness that is Keyboard Maestro, I remapped my Home, End, Page Up, and Page Down keys to the above keystrokes. Now, I can use my keyboard the way God (and not Apple) intended.