validation and STI

i got a problem with validation and sti class

Account < ActiveRecord::Base   validates_uniqueness_of :field1   ... end

User < Account   ... end

i created a few User models in the bootstrap file and i noticed that the validation does not work. Do you know why?

What version of rails are you using?

I just read "This seems to be a regression issue on Rails 2.3, works fine on previous rails versions"

What version of rails are you using?

i'm using rails 2.3.5 i tried to insert some User models with the web interface and the validation works there. maybe it's only an sql cache issue.