Strange behavior with RubyAuthenHandler on ruby 1.8.1 + modruby 1.0.7

hello everybody,
first of all, thanks for the works done on modruby/eruby, great job :o)
Secondly I have my first big problem for 1 year of use of modruby.

We have an intranet developped with ruby 1.6.7 + modruby 1.0.3 + apache 
1.3.x and we want to use ruby 1.8.1 + modruby 1.0.7 + apache 1.3.x.
But we have a problem with RubyAuthenHandler on this new plateform. I 
have spent a long time identifying this "bug".

description of the problem :
------------------------------------
I have 3 files :
./libs/bar/foo.rb <-  Module Bar with class Foo
./libs/bar/auth.rb <-  Module Bar with Module Site to do the apache auth
./test.rbx <- the problem :o).

test.rbx ----
require 'bar/foo'
include Bar
cgi=CGI.new
puts cgi.header
puts Foo.name
-------------------

httpd.conf ---------
RubyAddPath '/home/test/bug/libs'
alias /test "/home/test/bug/"
<Location "/test">
  Options +ExecCGI +Indexes
  AuthType Basic
  AuthName "Auth"
  require valid-user
  RubyRequire 'bar/auth'
  RubyAuthenHandler Bar::Site
</Location>
--------------------------

1) with no auth, test.rbx display correctly
2) with auth with RubyAuthenHandler, test.rbx display correctly
3) with auth with RubyAuthenHandler AND using "require 'bar/foo'" in 
./libs/bar/auth.rb
=> modruby don't find Foo (constant is not defined).

Can you please help me to find the problem ?

Thanks for all.

   Loïs




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