Comment 11 for bug 545221

In case someone else comes across this before it is fixed, here is a temporary fix that worked for me:

Set the page size to the objects you want to export.

File -> Document Properties. Select the Page tab, just under Width and Height steppers there a triangle beside the words "Resize page to content", click it, click "Resize page to drawing or selection".

This got me the right height but flaked out on the width. I added 1 pixel to the width and was in business (approximately). The 1 pixel thing my have to do with the fact that my stroke in testclipping.svg is 1 pixel wide... so experiment.

I suppose this means that Inkscape has its own way of calculating the drawing area, since this button gives a result different from cairo's...