New Ubuntu user here. I'm posting this from my new Ubuntu install!

I got my wireless set up pretty easily, and it's working great, but I have no signal strength indicator on my desktop panel. From the documentation I've read I should have a wireless signal strength indicator showing in place of the "2 black monitors" network indicator in the upper-right. Well, even when I'm connected via wireless and not plugged in at all I only get the "2 monitors."

Is this normal? How can I get a wireless signal strength indicator up on my desktop?