If I run the gnome control-center program (from the toolbox
icon on the gnome panel) and launch Desktop->Window
Manager->Enlightenment(Current) from within it, there is a
control under the Desktops setting to enable or disable
"Edge Flip Resistance".

I don't like switching desktops at the edge, so I like to
keep this setting disabled. If I save the setting and exit
the config program, everything works as expected.

Sometime after that, I open the enlightenment config program
again and change some other enlightenment settings (say a
special F/X setting). Sooner or later (usually every time)
after making such a modification, the config program
"forgets" about my disabling of Edge Flip Resistance, and
re-enables it without me touching the control for it