Rails - May 2006 - :case_sensitive => false not working with postgresql

Hi,

I''m trying to get login validations to be case insensitive. After doing
some research, I found out that postgres and sqlite are case sensitive 
by default.

This changeset (http://dev.rubyonrails.org/changeset/4207) should fix 
the bug. I''m running rails 1.1.2. I can''t figure out if this
is part of
my version of rails, or if I''d have to move to edge to get the 
functionality.

My code simply looks like this:

validates_uniqueness_of :login, :case_sensitive => false

However, entering login variants such as "test", "Test",
"tEST" creates
these logins without complaint. Not exactly what I want.

Is there a way to attach the condition sql manually?

Thanks!

Ben