Version: (using Devel) OS: Linux Installed from: Compiled sources In latest kde 4.4b1 there seems to be a problem with task manager. Sometimes when an application exits, its entry stays. There are no real reliable steps to reproduce this, but I can with eclipse, by starting and closing it for multiple times. After that I'll have an eclipse entry inside task manager, though eclipse is not running anymore.
it's fixed in trunk (beta2 should be ok)