keyboard and touchpad fail

at startup the keyboard and trackpad works fine. After a few time (test in open firmware and osx) both not responding anymore.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2942205:01crwdne2942205:0:

How does it work with an external USB keyboard after it fails?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0