Many thanks.  I certainly agree with Grahams first paragraph in the link
provided, and it explains why returning to the Label Options panel is so
confusing - it doesn't  display the actual label settings you previously
selected... just what it thinks you want to use next.  Checking the rulers
and spacing on the resulting blank document before proceeding to the next
step actually confirms the right label format has been selected.

My problem was, however, far simpler.  Deep in the advanced settings of my
laser printer, the paper was set to "letter" (doh!) despite when I installed
the drivers, all the hardware settings were set to A4.  Serves me right for
upgrading pc and software all at the same time and expecting everything to
work like it did on my old pc.

Thanks for the link to Grahams pages though.

Tony