Version: 1.10.1 (using 4.1.2 (KDE 4.1.1 (KDE 4.1 >= 20080828)) "release 52.1", KDE:KDE4:Factory:Desktop / openSUSE_Factory) Compiler: gcc OS: Linux (i686) release 2.6.25.16-0.1-pae There are random numbers in the system tray KMail icon which are independent of my unread messages. When I maximize the window, it fixes itself. Related bugs (which are much older than this one - but they are KDE3): bug 75583 bug 83893 bug 87738 bug 119350 bug 131917
It seems, it is fixed in the trunk.