My MSWord 2003 suddenly insists on printing single-spaced
texts double-space, no matter which format I use (print
preview shows doublespaced even when the document on
screen is single).

When in editing text documents I wish to single-space a
pair of double-spaced lines, even though I define them  
it now declines to obey the single space command, (what
it actually seems to do is single-space for a nanosecond
but immediately default to double-space. Can anyone
help??