Desktop behavior in fc5->fc6 upgrade

[Phillip <ptho FIREFLY NLM NIH GOV>]

After upgrading from core 5 to core 6 (32-bit), every time I log in, my 
gnome desktop is black until I open System->Preferences->Desktop 
Background and I run the mouse over the application gui. Changing settings 
has the same result.

2. The gnome desktop contains no icons and a right click does not bring up 
any options.

3. Switching to kde makes the wallpaper look correct; right clicks bring 
up options. However, seleting a konsole window produces a window where the 
mouse works on the menu bar but no text can be entered into the window 
from the keyboard.

I have checked the local file permissions affecting kde and gnome, but see 
nothing amiss.

Any suggestion about what rpms need to be (re)installed or about what 
settings have gone awry?

Phillip Thomas