Logged in as root, I get the following: note the error message at the end. =====================log begins=========================================== cpan> install Bundle::libnet Running install for module Data::Dumper Running make for I/IL/ILYAM/Data-Dumper-2.121.tar.gz Is already unwrapped into directory /Users/dbae/.cpan/build/Data-Dumper-2.121 Has already been processed within this session Running make test Prepending /Users/dbae/.cpan/build/Data-Dumper-2.121/blib/arch /Users/dbae/.cpan/build/Data-Dumper- +2.121/blib/lib to PERL5LIB. PERL_DL_NONLAZY=1 /usr/bin/perl "-MExtUtils::Command::MM" "-e" "test_harness(0, 'blib/lib', 'blib/a +rch')" t/*.t t/dumper......ok t/overload....ok t/pair........ok All tests successful. Files=3, Tests=373, 1 wallclock secs ( 0.49 cusr + 0.07 csys = 0.56 CPU) /usr/bin/make test -- OK Running make install Already done Net::Telnet is up to date. Net::Cmd is up to date. Bundle summary: The following items in bundle Bundle::libnet had installation problems: Data::Dumper =================log ends====================================================== However, a manual install of Data::Dumper and of Bundle::libnet (going to the directories concerned + and typing make install) worked without complaint. There are no tests in Bundle::libnet. Can anyone give an explanation of what is going wrong? Thanks David