FVWM: HTML

[John Faucett]

We have displays with multiple monitors and multiple NVIDIA cards.  When
Firefox displays a page with <INPUT> widgets and something is entered into
the widget, then X11 hangs or crashes.  This doesn't happen if there is only
one NVIDIA card being used or if a window manager other than FVWM is used. 
It also seems to be independent of the driver (NIVIDIA-supplied or elrepo,
for example).  Any ideas on how to fix this?