> Ferenc Engard wrote: 
> I miss a usable debugger. I.e. what I can use in a 
> event-driven GUI program, and do not slow down the program 
> with 2 magnitudes.
> 
> Maybe the lack of an IDE is a problem, although I do not 
> prefer them even in c++ (I do not program in java).

Regarding an IDE and debugger, try out the Eclipse IDE (www.eclipse.org)
with the Ruby-Eclipse plug in.  It's a great IDE with good Ruby
debugging. 

Ron