I also now have this problem after updating - F88k it! i can't even begin to say how inconvenient this is, other than the rest of you must feel the same as i'm sure my job is no more important!! Reading Lawrence's adamant comments has made me furious.. absolutely NO WAY this phone has been jailbroken (whatever that is) got it direct in Jan and defo not issue with firewall.
I was responding to someone who SAID their phone was jailbroken; I was not talking to you. If yours isn't jailbroken read my other post. https://discussions.apple.com/message/21579241?ac_cid=tw123456#21169947