On my 12in iBook G4, I had a problem which started a few months ago and got increasingly worse. Using the trackpad, the cursor would freeze. At first using a mouse would unfreeze it (even making the trackpad usable again), but then sometimes that, too, wouldn't. All I could do would be to force shut down the laptop. But the freezing got worse and worse and worse. Then yesterday, the iBook twice stopped acknowledging that the airport card was installed. Strictly these two problems should have nothing to do with each other. In desperation, and not really knowing a lot about OSX, I booted up from the installation disk and 'repaired permissions' and blow me, the problem as not yet come back (tho' that might be tempting fate). Can this be possible? No more trouble with the freezing, so far, and no more trouble with the airport card not being seen. Mind, it's early days yet.