Clicking the SaveAs menu button in the X windows notebook frontend did not apparently do anything. After several clicks (separated by long waits) on the button the cursor changed to a black dot with white horzontal bar. The front end was hung then hung up and non-responsive.
Also new sub-windows (ex. help...), browers, etc. are not displayed. I suspect that these subprocess forks are not being sent to the correct display 'channel'.
Mathematica Version HP9000 Series 700 2.2 is the version running on node mist.our.local.net (an HP 700 running HPUX 9.x).
From happy ( A VAXstation running VMS and DECWindows), I telnet to mist.our local.net, logon and use the c shell, set the enviroment variable DISPLAY to happy.our.local.net:0.0, and then invoke Mathematica.