Ok

This is what I used to do:

my $xml = getXML($url); # retrieve it thru http
my $parser = new XML::DOM::Parser;
my $doc = $parser->parse($xml);

# This first snippet would take as much as 2Gigs of memory.
[download]

Now, I do this:

my $xml = getXML($url); # retrieve it thru http
my $file  = writeToFile($xml) or return; 
my $parser = new XML::DOM::Parser;
my $doc = $parser->parsefile($file);

# This isn't even noticeable
[download]

Any Ideas why the first form is so greedy in memory?
Never found anything about this in the doc.

Thanks a lot.