Yes, I'm using Gnome. Sorry, not sure why you thought I was using KDE. I USED to use Kubuntu.
Its still happening. I'm going to put the Appearance settings to None and see if that works. Now its on normal and its still happening.
My graphics card - lspci -v
01:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce Go 6200/6400] (rev a1)
Subsystem: Packard Bell B.V. Device c00f
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at c0000000 (32-bit, non-prefetchable) [size=16M]
Memory at 90000000 (64-bit, prefetchable) [size=256M]
Memory at c1000000 (64-bit, non-prefetchable) [size=16M]
[virtual] Expansion ROM at c2000000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: nvidia
Kernel modules: nvidia, nvidiafb