In filtered model list dialogs (itemviews), the sorting ascending/descending arrow points the wrong way.

Build the Basic/Sort filter model example. Run the application and sort the "Sender" column (by clicking on it). On Linux systems (Ubuntu) when the items are sorted in descending order an Up arrow is shown (in the column title bar). On Windows systems (WXP) a down arrow is shown. I believe that this discrepancy is a fault in the QT Linux implementation of itemviews. A screenshot is attached.