out of Time range (RangeError)

I am getting the following error message when starting WEBrick:

C:/ruby184-20/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/
active_support/core_ext/numeric/time.rb:64:in `+': time +
946728000.000000 out of Time range (RangeError)
        from C:/ruby184-20/lib/ruby/gems/1.8/gems/activesupport-1.3.1/
lib/active_support/core_ext/numeric/time.rb:64:in `from_now'
        from ./script/../config/../config/environment.rb:55
        from C:/ruby184-20/lib/ruby/site_ruby/1.8/rubygems/
custom_require.rb:27:in `require'
        from C:/ruby184-20/lib/ruby/gems/1.8/gems/activesupport-1.3.1/
lib/active_support/dependencies.rb:147:in `require'
        from C:/ruby184-20/lib/ruby/gems/1.8/gems/rails-1.1.6/lib/
commands/servers/webrick.rb:52
        from C:/ruby184-20/lib/ruby/site_ruby/1.8/rubygems/
custom_require.rb:27:in `require'
        from C:/ruby184-20/lib/ruby/gems/1.8/gems/activesupport-1.3.1/
lib/active_support/dependencies.rb:147:in `require'
        from C:/ruby184-20/lib/ruby/gems/1.8/gems/rails-1.1.6/lib/
commands/server.rb:30
        from C:/ruby184-20/lib/ruby/site_ruby/1.8/rubygems/
custom_require.rb:27:in `require'
        from C:/ruby184-20/lib/ruby/gems/1.8/gems/activesupport-1.3.1/
lib/active_support/dependencies.rb:147:in `require'
        from script/server:3

Please help!

I figured out what the problem is. It is caused by the following
statement in the environment.rb file:

ActionController::Base.session_options[:session_expires] =
30.years.from_now

I changed 30 to 10 - that took care of the problem.