With the new threat of firesheep, it only makes sense to stop using unsecured networks. Unfortunately, if you use settings-->network, it (seems to) only allow you to forget networks that are currently in range. How do you make it forget other networks? My iphone remembers all kinds of such networks from my travels, local and otherwise, so potentially it could be logging on in my pocket (unless I keep wifi off all the time). I want to keep my secured networks (because I use them and don't want to re-enter passwords) and forget all the unsecured ones. So, is there some way to choose from a list of all the networks the iphone knows? Thanks!!