Left Side widgets display in middle of page


Having a bit of a weird problem with the Blogs MU theme. When I add a widget position to the left side-bar, the content appears over the middle of the post area. Best thing is to take a quick look here -
If you scroll about half way down the page, you'll see the heading in the left column 'quick job search' then the search boxes are positioned off to the right.
For that example this is a text/custom html widget with a form. But the same problem occurs with other widgets in that position, for example the 'Use social site login' is another widget you can see the problem with.

Appreciate some pointers,