debugger hangs

[Tom Olin]

I, too, have recently experienced dbx hanging while debugging in
OpenWindows.  There does not appear to be any specific event that causes
it to hang.  Often, it dies while I'm just looking and thinking.  (Say,
now there's an event!) Suddenly, the mouse freezes and everything stops
moving, including xclock and perfmeter.  I have to login on another
terminal and kill -9 dbx.

The environment:  Sun-4/150, SunOS 4.0.3, OpenWindows 1.0 (FCS).

I watch for clues but haven't noticed any yet.