Unusual Traffic detected on google from my iPhone?

So, over the last week google has been giving me the "sorry unusual traffic has been detected" page sometimes giving me a captcha, but never actually letting me search. I have a iPhone 4, not jail broken, and it only happens when I use the AT&T 3G network. I google things really often, but I don't think it's "unusual". I've tried clearing the cookies and data and that hasn't worked and I submitted details to google.

Google for iphone sucks, that is why

That's most commonly the response to an unusually high number of searches from a single user, like when when a web promoter is using automated search rank checking tools. Conceavibley there cold be some sort of virus doing Google stuff in the background, but I would guess your internet connection IP address is shared with other users who are accessioning Google too much. Your carrier might have to resolve something like that.