It would have been interesting if they had opened the 33 applications with the PC connected over SSH to show the CPU and memory information.

It could very well be the GUI froze but the OS itself was still thrashing around trying to get the swap partition in order.

In fact, as the N900 has a watchdog timer if it HAD frozen fully it would auto-reboot anyway. That is in fact what appears to happen with people who have the random reboot problem.