In all apps I've visited, the column title and the values in the rows below are not properly horizontally aligned. The title should be aligned with the icon in the list, with a possible arrow from trees being on the left of that combo.

The visual design rules are as follows:

• column headers are left-aligned (I think that's the case everywhere)
• column values are left-aligned as well, if they consist of either only text or of an icon plus some text
• column values are centered if icons are used to represent them. Examples are the "Status" column in the page tree and the "Type" column in the messages list (see attached screen shot)
• if a column shows a tree and thus every row contains icons and text as well as open and close arrows:
  • the arrows should be to the left of the column header
  • an optional icon and the non-optional text should be left-aligned with the header (see attachment)
• if there is no open/close arrow, there also should be no gap between the check boxes and the title value.