If you are using News Magazine Theme 640 you need to keep in mind that the “IndexPageSidebar” widget space is specficially for the Index page. Widgets you put there will show up in the leftmost column of the second row of content on the index page. The “regular” sidebars are “Sidebar Narrow” and “Sidebar Other”. Sidebar Narrow is meant to hold the content for the movable sidebar which is narrowest of the two regular sidebars. Sidebar Other is the second sidebar that’s a little wider than the narrow sidebar.
To avoid layout issues please do not put all your sidebar elements into one block and only put elements that will fit into the allotted sidebar space. The Index Page Sidebar for example is set to hide anything that overflows so you can’t put more there than it can display. The other sidebars will adjust to your content vertically, but if you put something into the narrow sidebar that is too wide for a 120 pixels wide space the element will stretch beyond the limits of the space and spoil your layout. Use the wider sidebar for elements that need more than 120 pixels of horizontal space. Use “Sidebar Other” for elements that are up to 230 pixels wide.