GC or mistake?

[baseball at nic-nac-project.de]

Hi,
I was trying out Slate on my home desktop FreeBSD system. Evaluating the
following expressions has consistently caused it to attempt to expand the heap
"beyond limits". Am I doing something illegal, is it a garbage collection thing,
or what?
Well, here's a transcript of my slate session:
Slate: Growing heap to 4726380 bytes.
Hi, there!
Slate 1> addSlot: #a.
(Mixins . Types . prototypes . VM .
        globals . a . traits )
Slate 2> a: (Set newEmpty).
{"Set"}
Slate 3> a add: a.
{"Set" {"Set" {"Set" ...}}}
Slate 4> a remove: a.
Slate: Growing heap to 8920684 bytes.
Slate: Growing heap to 13115004 bytes.
Slate: Attempted to grow heap beyond limits

I'm trying to figure slate out...I have experimented with smalltalk and am very
interested in the ideas behind slate.
Thank you,
Jim Hartzell