Not sure if this is the proper list, but I've spent days browsing for the solution. This only happens on the CentOS machine, so I'll start here. After upgrading CPAN, I get the following: undefined subroutine &Compress::Zlib::gzopen called at /usr/lib/perl5/5.8.5/CPAN/Tarzip.pm line 102. "gzopen" seems to refer to a PHP command. Am I missing a module, or have I hit a bug? KS