I seriously doubt the images are modified on the server in any way. They are
in plain text format, i.e. they are UUencoded. This increases file size, but
decoded images are identical to their originals.
I can only guess, but here's one possibility: you have Windows, you possibly
have a high-colour (16 bit) desktop and you view the downloaded image in
Netscape or OE. AFAIK, these programs don't dither images. Most dedicated
image viewers do. Undithered 16-bit images often exhibit colour banding. So
do some 24 bit images.

Margus

Ken wrote in message <370EE5D6.48DF615D@pacbell.net>...
>
>  I have seen ambiguities with images I have posted here that looked
>different localy. I wonder if it might be related to the data storage
>method used on this server. I am pretty sure that every thing here
>is stored with compression applied. I recall Chris Cason mentioning
>that all image file posted here were in fact stored as a form of
>plain text file. I no too little to guess more on this issue.
>
>--
>Ken Tyler
>
>mailto://tylereng@pacbell.net

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