OK, I changed the refresh time to 5 minutes.
If you already installed the button, just delete it and then reinstall.
TO DELETE:
On the Google Toolbar, go all the way to the right and click on the Settings button, then select Options...
A Toolbar options Window opens. Click on the Buttons Tab.
Hilight the search.somd.com entry under custom buttons and press the Remove button on the right.
Now just click on the link to reinstall:
http://toolbar.google.com/buttons/ad...bar-button.xml