The upgrading to Mac OS X 10.5.5 went fine. Downloading and installing 340Mb update was a breeze and a matter of 20 minutes, but then. Immediately after the restart neither the keyboard nor the touch pad worked. Putting into sleep (it was late night and I postponed the investigation until morning) and getting back to normal unfreezed the keyboard and mouse pointer, but the touch pad button still didn’t work.

Another reboot helped and now everything is working. One thing I noticed though, it was accessing the hard drive a LOT more during the startup. Maybe it was just installing / indexing changed parts, who knows… we’ll see.


  • If you see oddities right after upgrading, don’t panic. The reboot may help.
  • If your mouse isn’t working,use the power button (hardware) to call the reboot / sleep / shutdown dialog and the “space” key to select the Reboot option.
  • If your keyboard isn’t working, try closing your laptop to sleep.