Mark,

> Here's a favorite attack of mine (pardon the VisualWorks 3.0 
> dialect - my guess is this will work in Squeak).  Currently, 
> it just determines the address of an object, but with a little 
> imagination...

Whow! Now that's a nasty one... I got to think about this a little more (in
particular about the reverse version - e.g., filling in some UBs with values
and #becoming these into a 'real' object). If you've got any more of these
please post!

  Andreas