I just opened my downloads folder which has a large number of files in it and set it to list view. I noticed that it was sorted by name from Z-A. So I went to click at the top of the column to re-order it from A-Z (as I have always done in previous operating systems) and discovered that this doesn't work any more. I can't click on the title of any column to set the sort column OR to reverse the sort order. This behaviour is the same regardless of the folder I view. Is this new? Or is this a bug in my installation and can anyone suggest a cure?