Time for a Confluence upgrade?

[Anastasia Cheetham]

We are a bit behind in our upgrades to the wiki. The latest version is  
2.9, and we're still on 2.5

The latest version has many useful features, including a drag and drop  
tree view which would allow control over the ordering of child pages  
(not forcing alphabetical order).

What are peoples thoughts on the prospect of a bit of down-time to  
upgrade the wiki? Would this interfere with daily work a great deal,  
if there is advance notice?

-- 
Anastasia Cheetham                   a.cheetham at utoronto.ca
Software Designer, Fluid Project
Adaptive Technology Resource Centre / University of Toronto

"I know quite certainly that I myself have no special talent;
  curiosity, obsession and dogged endurance, combined
  with self-criticism have brought me to my ideas."
                             -- Albert Einstein