How can I tell if my touch has a virus? And if it does, how do I get rid of it? I mean, I hate to immediately think the worst, but lately safari's been crashing on a somewaht frequent basis and I'm just wondering if that's something to worry about (for the record, I have an unjailbroken 1.1.3 with January upgrade. Would upgrading to 1.1.4 help maybe?)