Trying to improve security I disabled several services and all went fine until I disabled dbus. My ubuntu boots but I get some error regarding HAL and Gnome, plus the keyboard and trackpad don't seem to work. Is there any idiot proof way to enable it again? Thanks in advance.

You should try to access the box remotely and enable them or do it in "rescue".

How do you do that in "rescue", I'm quite new. Cheers,

To access your machine remotely you would use SSH or telnet I don't recommend telnet. For this to work you will need to being running the SSH server on your box. If you're not sure try from another computer on your network and use the command "ssh user@serverip" if it works and you get a password prompt then the SSH server is running. Run as root:
/etc/init.d/dbus start
Then login and change your setting in the manager to get the service to start on boot or run:
update-rc.d dbus defaults

In rescue (from the cd or dvd) you would run from the command line (as root):
update-rc.d dbus defaults

I hope this helps.

This helps big time, really appreciate.

cool glad'