After adding the site google.*/ig*, this script seems to solve a similar annoyance I have with iGoogle (which is my home page):

I start typing my search subject in the FireFox bar, but as the iGoogle page loads, it steals cursor focus and "helpfully" moves my cursor to the Google search box.

I hate that!! It grabs focus midstream, leaving me with half my entered text in the FF search box, and half in the Google box -- so I have to start typing all over again.

With this nifty script, my cursor stays up in the FF search box, where it belongs.

Thanks!