terminal shutdown

[Dan Richert]

i wrote a script that accesses files at random from the locatedb 
database.  it then prints a random line from the file it's accessed to 
the terminal screen.  this runs continuously and at times makes the 
terminal behave strangely (chaning font colors, output writing over 
itself on the screen, etc) -- i like this strange behavior, but the 
behavior i don't like is when the terminal window closes on its own.  i 
suspect that the script isn't crashing, but that characters are being 
displayed that interrupt terminal somehow.   i'm on mas os x.   any help 
on this would be greatly greatly appreicated.

thanks,
dan