[Zope] images last-modified bug?

[Júlio Dinis Silva]

Hi,

I read sometime ago of a bug in zope not sending images header
last-modified, which cause browsers to always get images from
zope not using the browser's cache. I'm seeing some different behaviour in 
my site statistics since I upgrade from 216 to 222, and
I think it could be related with this image problem. I search in HISTORY.txt 
but I cant find nothing saying If the bug really existed and if it was 
fixed.

Any help?

Best Regards,
Júlio Dinis Silva
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