Hmm... seems to have a problem with "Export as PNG" in 32-bit mode.

Anyway, here's the damaged PNG file (changed to 16-bit mode and re-exported):

-- 
Ned Konz
http://bike-nomad.com
GPG key ID: BEEA7EFE
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Desc: Before and after views of the fonts
Url : http://lists.squeakfoundation.org/pipermail/squeak-dev/attachments/20040413/18480449/Summary16.png