Hi,

I will report the actual bug description first, but I have tried to get multiple
master slides to work in 10 different ways without any success... 

A typical way to build a presentation is to create a master slide for "chapters
slides" and a master slide for normal slides. This is how I do presentations and
most people out there do.  So I need to create two master slides and have them
available as a master for each new slide I insert into the presentation.

So, 
1. I create a new blank presentation
2. hit view --> master --> slide master
3. change background to green (format --> page --> background --> colour --> green)
4. rename master slide to m1
5. close master view
6. insert new slide (it will come up green too)
7. note clicking on "master pages" on the right hand pane there is a mster page
under "used in this presentation"
8. create a new master slide (right click on left hand pane, select new master"
9. rename master m2 (right click on slide, select rename master)
10.change background to gray(format --> page --> background --> colour --> gray)
11. close master page
12. both slides are now green, the right hand pane, under "used in this
presentation" shows two green slide masters!!
13. in the slide masters view (view --> Master --> slide master) they are both
there (gray and green)

funny stuff:
14. if I save presentation, close it and re-open it, now the masters on the
right under "used in this presentation" are gray and green, so saving/opening
somehow fixes that
15. if I select the second (gray) master slide, and then select the green one
again (without applying gray master) the gray one DISAPPEARS forever... it's not
in the "view-->master-->slide master either).  If I apply it immediately to the
second slide I can save it.
16. it seems like even if I do apply it to the second slide, it goes if I delete
the slide. It seems like "masters disappear if they are not associated with a
slide".

I think it is important to fix this, because it's the first thing lots of
presenters will try, and switch back to microsoft (unfortunately.)

Cheers

Marco