Version: 1.9.3 (using KDE 3.5.3, Kubuntu Package 4:3.5.3-0ubuntu0.1 dapper) Compiler: Target: i486-linux-gnu OS: Linux (i686) release 2.6.15-23-386 - make sure the tray icon is enabled in the settings - click the close (x) button in KMail's titlebar KMail minimizes (or at least shows a minimize animation). Kopete, Amarok etc. don't show a minimize animation when closing them with their systray icons activated - the windows just disappear.
*** Bug 131174 has been marked as a duplicate of this bug. ***
can not reproduce with KDE 4.3.1