Rails - Jun 2006 - Eager loading and acts_as_tree

Hi all,

I have a node structure which acts_as_tree. I am pulling the first  
two levels under the root node with:

@root = Node.find(1, :include => [ { :children =>  
[ :children, :parent ] }, :parent ])

How do I pull out the first three levels? What about four?

@root = Node.find(1, :include => [ { :children => [ { :children =>  
[:children, :parent] }, :parent ] }, :parent ])

gives me the following error:

Mysql::Error: Not unique table/alias: ''childrens_nodes_2''

Many thanks in advance,
Nickolay