I've been working on some updates to the administration guide. Mostly 
organizational in nature but I've rewritted and added a few sections.

I also have tried to remove the documentation from older versions that 
no longer applies to 2.0.x.   Most people I've spoken to feel that this 
was making the documentation too confusing and that you are better off 
using the slony documentation for the version you are using.

You can view a preview here http://www.slony.info/~ssinger/slony2.0.5/

with my changes available 
http://github.com/ssinger/slony1-engine/tree/adminguide_rework

If no one objects I will merge these changes into REL_2_0_STABLE later 
this week so they are included with release 2.0.5