I typed users and it shows that I have 4 roots logged in. I should be the only person logged in. Should I be worried? Are there services that log in as root?

How do I find out where they're logging in from?

For some reason, I have this thing listening on a port:
/tmp/ssh-XXJaxpng.agent

Is that a normal ssh thing?

netstat -l |grep LISTEN should help you identify ports that are bieng listened on. If you find an output showing only port number and not a recognised service then I think theres a site you can check what ports are set for certain services.

Also to check if services are running as root do a

ps aux

or if you know of services running on your machine use

ps aux|grep Servicename

also use Dmesg to check what services start on boot up.

Also check your /etc/inetd file to see what services are set to run thru inetd.

If your not running inetd but instead xinetd check each of the config files set for the services running.

If you find anything suspicious then post results here or disable the service.

As far as having several root logins you havent logged in as root on the other tty terminals have you????

use Alt+F1 thru to F6 to check (or in X Ctrl+ALt+F1 etc)

hope this helps

Cool thanks. Nothing listening so I guess I am safe.

that's a presumptuous thing to say.