HTTPSocket httpGif:
'http://www.povray.org/ftp/pub/povray/Hall-Of-Fame/sundae.gif'

returns the correct form, while 

|url|
url := 'http://www.povray.org/ftp/pub/povray/Hall-Of-Fame/sundae.gif'.
ImageReadWriter formFromServerFile: url.

was not able to find the gif header. (see GIFReadWriter>>readHeader, 
the stream is different than in the first expression).

Bye
Torsten