Those who follow me on Twitter, will see that I just submitted a patch for SPR-6870. Great patch if you're running something like a web-based application with lots of non-singleton scoped components. You might save a server or more by applying that patch and the spring context starts quite a bit faster too.
So while you're waiting 20 minutes for spring to compile, just look out for one more thing:
Don't autowire into arrays/collections unless the containing component is a singleton. Spring does not do a very good job of caching that stuff (it sucks, actually).
So if your non-singleton scoped classes (or junit tests - like we had ;) contain something like
private MyFud myFuds;
Just make a separate singleton object that encapsulates the array/list and wire that into your controller class / junit test instead. Bang you're safe.