Macbook running TIGER randomly stops accepting keyboard input

Do you have all your Apple updates, including the keyboard update?

 

Have you reinstalled the OS? If so this might be a hardware problem. Apple has been very generous in replacing out of warranty top covers.

 

Locked WindowServer?

My MBP is doing the exact same thing. Exactly, except on Leopard. This is really frustrating, they just replaced my case and keyboard in time for the warrantee to expire — I hope it's not a hardware issue. 10.5.6 combo update has no effect!! I wonder if I installed something that damaged my finder?

There's also weird errors in windowserver.log

 

If you restart Finder, does the problem go away? To do so, open a Terminal window and type:

sudo killall Finder

Your desktop icons will disappear briefly. (Don't worry, they'll come back.) You may need to click on the Finder icon in your Dock to relaunch it, although it often restarts on its own.

By the way, killall is a very questionable sounding command, one which should definitely be taken with a fair bit of suspicion when given as advice on an open forum. When someone tells you to type something in Terminal, always make sure you have a rough idea of what it will do before you follow the instruction. I want to back this up with an explanation if you do care. Killall quits all processes with a given name, in this case, Finder. It does not permanently affect your computer.

 

hhhmm

Have you reset the PMU & PRAM?

F