Same problem over here, on Karmic with Matlab and with Weka (a Java data mining tool). The windows are not listed in gnome-panel, until I click the "click here to minimize all button" in the gnome-panel.
Linux desktop 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 16:20:31 UTC 2009 i686 GNU/Linux java version "1.6.0_16" Java(TM) SE Runtime Environment (build 1.6.0_16-b01) Java HotSpot(TM) Server VM (build 14.2-b01, mixed mode) ** Changed in: gnome-panel (Ubuntu) Status: Incomplete => Confirmed -- java windows disappear from taskbar when filedialog is opened https://bugs.launchpad.net/bugs/461822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs