Hi again:

I've been testing out a small class that regularly polls the serial port for 
data.  I've been noticing that if I leave this class going overnight, the CPU 
load creeps from about 15% to 100% by morning.

I don't see any immediate reason for it.  When I try to do anything in the 
Squeak window when it is in this state, nothing happens--the interface is dead 
until I do an alt-.  (I would have shown the stack trace here but I 
accidentally nuked it before I could copy it. :)

After this, the load drops back down to 15% and all is happy again.  Note that 
the memory usage doesn't change...just the CPU load....this is on 2.9a under 
Linux as well.

Even without my serial polling class being active I've noticed that the Linux 
VM seems to chew up more and more CPU over time...  I leave a Windows VM 
running at work most of the time and I haven't had any strange CPU loading 
issues with that.

Does anyone have any ideas?  Suggestions on how to debug this would be very 
helpful!