As already stated by chromatic multipart data has boundaries which delimit the data and the terminating boundary is not being found. Causes are crap browsers sending corrupt data, lost packets, aborted file uploads, or bugs in cgi-lib.pl. Both CGI.pm and CGI::Simple can do a drop in replacement for cgi-lib.pl which lets you rule out software - see the docs for details. This involves a simple 2 line change to the code in most cases. Otherwise you need to deal with it as it does happen for the above reasons. If you read the source of CGI::Simple you will see documented some of the hacks to fix the corrupt (non RFC standard) boundaries that various browsers send.

If you want to see the actual boundary structure POST a multipart form to a simple CGI like this:

#!/usr/bin/perl
print "Content-type: text/plain\n\n";
print while read( STDIN, $_, 1024 );
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cheers

tachyon

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