If your Intel-based Apple portable is having keyboard problems after the Leopard upgrade, you’re not alone. In fact, you’re alongside legions of other users. The bug comes and goes intermittently, causing the keyboard to freeze for a random amount of time. Usually a restart will solve it, but often an extra and PITA step of a PRAM reset is needed.
The latest software update doesn’t fix the problem, however Apple should likely have a patch out soon. Problems like this tend to be easy to fix, though Apple’s been known to put its hands over its ears and say, “Blah blah blah can’t hear you blah blah,” so we’ll see what happens.
MacBook, MacBook Pro owners suffer keyboard freezing with Leopard [Apple Insider (no, you brought 'er!)]