problem with emacs shell mode

[Jay Cotton <jay@fleeingrabbit.com>]

Hello,

I am trying to use a version of emacs for OS X. (version 21.3.5 from 
Mindlube.com ( http://mindlube.com/products/emacs/index.html ))

Everything was working great, and I started to think I was finally in 
emacs paradise, and then I opened a shell buffer with M-x shell. The 
problem I encountered is that the shell seems to hold onto output of 
the underlying processes without displaying it on the screen. So, for 
instance, if I run the unix command 'units' at the shell prompt, 
instead of prompting me for what unit I have (which is what the program 
is supposed to do), it appears to hang. The only time it will show the 
output (that I'm aware of) is when the underlying process ends. As a 
result, programs like 'ls' appear to work because they aren't 
interactive - they end almost as soon as they are started and their 
output appears immediately in the buffer. But none of my interactive 
shell scripts work. :(

Anybody have any idea what I might do to fix this?

Jay