Version: 1.11.90 (using KDE 4.2.90) OS: Linux Installed from: Ubuntu Packages This is hard to explain with words so i'm using a screenshot: the columns marked with red are fixed and cannot be resized (since this version) and when i move the blue marked column, the ones marked with red are moved too, so they take over the space where the folder names are. The only way to move the red columns to the right, is to move the blue one all the way to the left, and then have it back where it was.
Created attachment 34982 [details] screenshot of kmail's screen
*** This bug has been marked as a duplicate of bug 195940 ***