Para  conseguirem a ultima versão do ubuntu gratuita e legal sigam este link :

http://www.ubuntu.com/getubuntu/download

ou

http://darkstar.ist.utl.pt/ubuntu/releases/9.04/

Novidades:

“

1) Gnome 2.26 desktop environment, which includes the following new features:

a) brasero, an all-in-one CD burning application.
b) Improved multi-monitor handling.

2) X.Org server 1.6, which supports several new video cards, as well as ATI-specific performance improvements including EXA acceleration by default, 2D support for R6xx/R7xx, 3D support for R5xx cards, along with an updated –fglrx proprietary driver for R6xx/R7xx 3D support.

3) New notification style and preferences.
4) Boot performance is “significantly improved”.
5) Linux kernel 2.6.28–11.37, which is based on 2.6.28.8.
6) Ext4 file system support.

7) Server edition includes support for cloud computing via Eucalyptus, an open source technology which is included in Ubuntu as a technology preview, enables you to use your own servers to deploy, experiment and test your own private cloud that matches the Amazon EC2 API.

Turn-key mail servers with the dovecot-postfix package, which supports SMTP, POP3 and IMAP with TLS and SASL.  “