I had the same problem with ubuntu, as have others. You'll find it in the thread titled:
Debian 3.1 32 bit fails installation
phoenix suggestion of '
apt-get install perl' got me past it. Full details are in
my post in the other thread, but Std.pm is not installed by default in Ubuntu.
[edited to fix Std.pm (not .pb) needed by Getopt::Std call in zimbra install]