Apple is gonna try to repair the PowerBook. The new keyboard didn't do the job. We tried RAM and the hard drive. The sequence to reproduce the freeze now seems to be to get the computer hot (doesn't take long :-) and then tap the space bar a few times. Hopefully, they can reproduce the problem.
I will have the TiBook at YAPC, though. I'll send it to Apple after returning. I'll be the guy with the external keyboard hooked up to his PowerBook. :-)
