Marcus Denker wrote:
>> We did a small paper for this years ESUG that describes the changes.
>> It will be online at esug.org soon with all the other papers.
> 
> Here is the pdf:
> 
> http://marcusdenker.de/publications/Duca09bTraitsAPI.pdf

Thanks though it seems there isn't much detail on the sharing issue; it 
appears that all that's being said is the following (for those of you 
who haven't read the paper):

	5.2 Non Sharing
	The new implementation copies the method instances and
	their source code on a per use basis (for each class or trait).
	This way a compiled method has a unique selector and a
	unique class to which it belongs. The source is also not
	shared anymore since with aliases the selector of a method
	can differ from its original (in the old implementation, the
	source was patched before shown to the user). [...]

Cheers,
   - Andreas