Google SafeSearch Won't Turn Off in Safari

In Safari 3.2, I've tried numerous times to turn off Google's SafeSearch mode by going to the Google Global Preferences page and selecting, "Do not filter my search results," then hitting the "Save Preferences" button. I get a pop-up message that says, "Your preferences have been saved," but despite my efforts, I still get "Strict SafeSearch is on" beneath the search field. Flipping over to FireFox, I can successfully deactivate SafeSearch, but in Safari, no go. Any way to get Safari to heed my settings?