large number of warnings generated by helpers

I ran ruby-debug on mongrel_rails today and noticed a ton of warnings/errors coming out of rails. Here's a pastie:

http://gist.github.com/57861

I notice that a helper is missing, and actionpack is trying to load the same helper 8 times! I bet some optimization work could come out of this area.

I also noticed this exception, which probably shows some missing test coverage in action controller:

Exception NameError' at /Users/scott/src/git/designcause/vendor/rails/activerecord/lib/active_record/base.rb:2037 - undefined local variable or methodcontroller' for #<SessionController:0x39034ec>