General :: Can't Install Updates With Apt-get Program Ubuntu 9.04

My update manager is alerting me of new updates to be installed and when I try to install them with apt-get, I receive this error message:

ronin-machine1:~$ sudo apt-get install updates
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package updates

This is the first time I've ever encountered problems updating. I tried updating apt-get thinking maybe this was the problem:

sudo apt-get update

It was successful but it wasn't the problem. I tried Google but the info I could find related to not being able to install specific software. I also tried rebooting my computer just as a last resort and that didn't do anything either.