Comments about running bootstrap_ruby.sh in a new installtion of Ubuntu 9.04 on a VMware guest.
The first lines of the script that start with sudo aptitude ... result in messages that say update, build-essential, etc are not found.
Manually entering sudo aptitude update, sudo aptitude install build-essential result in similar errors
Entering sudo apt-get update, sudo apt-get install build-essential, etc. one line at a time manually does not cause errors.
Are you sure this was not a network access issue when you ran the script? Also, when you run manually, does aptitude vs apt-get fail?