As [noted elsewhere](http://www.tipb.com/2011/11/04/caching-bug-ios-5-safari/), Safari seems to have a bug in its cache management, that could potentially be a serious security issue. Here are the steps:-
Tag: iOS5
iOS5 and Lion 10.7.2 Upgrades – A Few Things Went Wrong
Here is a list of the things that went wrong with the upgrades ### iOS5 * iPhone couldn’t complete the upgrade due to Apple server