[Usability] Show desktop button

[Tom Conneely <tom conneely17 ntlworld com>]

I have just noticed that the show desktop button minimises all windows 
on every workspace and was just wandering what the reasons were behind 
this decision as it seems to make little sense to me. When I am working 
I use each workspace for an individual task, i.e when writing a report I 
will use the front desktop (as I see it, i.e. Desktop 1) for 
word-processing, then the 2nd for something like a web browser with 
reference material. Then I may finally have any applications I don't 
require for the task at hand but still want running in the background on 
the final desktop (such as xmms).

Now when I find I need another document for reference, for example a 
text document, that I have kept on my desktop for easy access. I will 
switch to desktop 2, use the show desktop button to get rid of the other 
windows before opening the file foo.txt. Then I switch back to the work 
in progress and it has vanished to the taskbar. This behaviour is 
contrary to my expectations as the 1st and 2nd desktops are entirely 
seperate in my mind so changes in one should not affect the other 
(excluding things like files placed on the desktop etc)

I hope i made myself clear.

P.S Where did the "show desktop" shortcut vanish to, and would it be a 
good idea to have this configurable through the show desktop button as well.