I have a class in /project_dir/lib called Failure. Failure has one
instance variable, t. But, if you call f.<anything> ( f being of type
Failure ), I override method_missing and create a method called
<anything> which returns 10 (it's a simplification of a much bigger
problem).

It works flawlessly, but only once. Under the trend action of my
controller, I instantiate a new instance of Failure. The first time I
load the action and try to display some variable on the view,
everything works. However, if I reload the page, all the instance
variables created on the fly return Nil. And they don't function
properly until I restart Webrick. And then it does the only once thing
again. 

Any thoughts ? Or feel free to ask for more details.