Writing to Ultrix pty loses data

[Ian! D. Allen [CGL]]

Under Ultrix 3.1, if you cut more than a few lines from an xterm and try
to paste into a (different) window running rlogin, the Ultrix pty will
over-run, beep madly, and lose data.  This happens whenever a lot of data
is (are) written into the master side of an Ultrix pty/tty pair and the
tty side is in raw or cbreak mode -- data gets lost.  Setting TANDEM
doesn't help.  Anyone know of a fix or work-around?
-- 
-IAN! (Ian! D. Allen) idallen at watcgl.uwaterloo.ca idallen at watcgl.waterloo.edu
 [129.97.128.64]  Computer Graphics Lab/University of Waterloo/Ontario/Canada