Seb Bacon schrieb:

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I also tried to name the animGif explicitely animGif.gif instead of animGif - guessed what? - same problem!

Any more ideas, please?

have you tried doing a diff on the zope and non-zope versions to see if zzope's somehow mangled it?

seb

Yes, I did. They were absolutely identical!

I 'diffed' the original and the up- and redownloaded version.

Perhaps I should 'diff' the original with the version which is inside Zope - but how to do this?!? It's an object, isn't it?

Perhaps you should use a tool like tcpdump to do a raw dump of the tcp-data which is sent. Or just look at the http-headers with a tool like samspade (http://www.samspade.org/ssw/). Perhaps there is a problem with them (differing content-length?) - maybe triggering a bug in IE. cheers, oliver