Excel 2007 charts resizing unexpectedly
 

On opening an Excel 2007 sheet with charts, I often find that the charts have
resized themselves: they are either too big to fit on the screen, or have
shrunk.

A work-around is to use the 'move chart' menu option to move the chart to an
object in another sheet and then move it back again as a new sheet. However,
the font sizes are then messed up.