With FieldStorage being discussed on main user mailing list, came across this old post of the mailing list:
http://www.modpython.org/pipermail/mod_python/2001-November/012256.html What it is saying is that some HTTP clients use multi line headers in sections of multipart/form postings and that mod_python doesn't handle this. Looking at FieldStorage code, which I don't grok right at this minute because of an intensive coding frenzy today on the back of not enough sleep last night, I can't see that it has ever been modified to accomodate such multiline headers if indeed it needs to. Anyone who is more intimate with FieldStorage code want to have a better look at validity of original mailing list post and whether multiline headers are legitimate and whether there indeed could be a problem in mod_python. Graham