Hey Ed, it’s not missing it’s down left below your content column. That’s probably happened because you changed the width of these columns, so the sidebar doesn’t fit in there anymore (width of left column and sidebar don’t add up to the whole thing)?
Haven’t checked, but might be a problem.
@Bpisimone: do you know which css statements I should search? I know I changed the left-menu and main-column widths, but don’t know in which css files they’re declared. The sidebar appears, but at the bottom of the page after all other content.