Version:            (using KDE 4.3.1)
OS:                Linux
Installed from:    Ubuntu Packages

* Bug Description: *
When I initially open GIMP, each of the three default windows have their own taskbar entry, with the entry for the "Layers, Channels, Paths, Undo ..." dock flashing.  If I go to any other desktop, I will see a taskbar entry for "Layers, Channels, Paths, Undo ..." on every one.  I have to click on that taskbar entry before it will stop showing up on every desktop.

Furthermore, however, I have noticed that if I continue working in GIMP without clicking on that taskbar entry, it will sometimes become permanently affixed to the taskbar on every desktop, even after I have exited GIMP.  The only resolution I have found when that happens is to log out of my KDE session and log in again.

* My System: *
Motherboard: MSI K9N SLI Platinum (nForce 570 SLI chipset)
CPU: AMD Athlon(tm) 64 Processor 4000+
RAM: 2GB DDR2
Video: Dell NVIDIA GeForce 7800 GTX w/ 256 MB RAM (PCI Express)
OS: Kubuntu 9.04 i386 (with KDE 4.3.1)
Linux Kernel: 2.6.30-020630-generic (also tested with 2.6.28.13)
NVIDIA driver: 185.18.14
X.org: 7.4