Philippe it seems to me that these ones may introduce problems. I  
prefer to let that for the next one.\
But thanks for pointing them.

Stef


>> Fixed Object >> #identityHash
> http://bugs.squeak.org/view.php?id=1876
>
> There are at least 3 (!!!) fixes for Interval >> #hash / #equals:
> http://bugs.squeak.org/view.php?id=5703
> http://bugs.squeak.org/view.php?id=3488
> http://bugs.squeak.org/view.php?id=3380
>
> The WeakKeyDictionary might or be interesting or too radical:
> http://bugs.squeak.org/view.php?id=6348
>
> Cheers
> Philippe
>
>