Ok, I found a fix. I had to learn a little perl for that. :-) The offending file was /var/www/cgi-bin/openwebmail/shared/ow-shared.pm In that file, at the top of subroutine httpprint: # ADDED: use IO::Compress::Gzip qw(gzip $GzipError) ; Further down in that subroutine, around line 1175: # REMOVED: my $zhtml=Compress::Zlib::memGzip(join('',@{$r_htmls})); # ADDED my $zhtml; my $input = join('',@{$r_htmls}); gzip \$input => \$zhtml or die "gzip failed: $GzipError\n"; I will do the same fix to the other occurrences, and trust that it will work!! Many thanks to all, especially David! - Jussi -- Jussi Hirvi * Green Spot Topeliuksenkatu 15 C * 00250 Helsinki * Finland Tel. +358 9 493 981 * Mobile +358 40 771 2098 (only sms) jussi.hirvi at greenspot.fi * http://www.greenspot.fi