xload stopped for tty input?

Sat Dec 24 05:21:10 AEST 1988

I have 2 VAXstation 2000's running Ultrix V2.2.  On one, when
I log in, I do a detached "rsh xload" on the other, so I get a load
display from the other machine.  Well, after I hit <CR>, I get
a message "[1] Stopped (tty input) rsh foo xload ..."
but everything continues to run.  That is, I get my load
display throughout the day, with this job stopped all the time.
Why does it do this?  What tty input is it looking for?
-- 
Jeff Percival (jwp at larry.sal.wisc.edu)