XO keeps staring at its own belly button

[Mikus Grinbergs]

By calling 'top' in a Terminal session when the 100%-CPU-using 
client is running, I've observed that during "unresponsive episodes" 
the 'top' display freezes -- in other words, it is not just user 
input, but also running programs, that are "superseded".

Also, the "unresponsive episodes" are periodic.  I don't have the 
patience to sit looking at the XO for long, but "use of large 
amounts of CPU" by 'X' happens, then there is a stretch of "normal" 
usage by 'X' before the next "large" usage happens.  Further, there 
seem to be periods (of many minutes) when NO "unresponsiveness" occurs.

mikus