Hi Tony,
Could it be a practical joke that somebody is playing on you?
You could look for suspicious macros, or simply disable the keyboard
shortcut (space bar):
Open the VBA editor (Alt+F11), go to the immediate window (Ctrl+G), type or
paste:
KeyBindings.Key(BuildKeyCode(wdKeySpacebar)).Clear
and press the Return key at the end of the line.
Hope this gets rid of the gremlins,
Klaus