I have an unjailbroken 8 gig Touch, and am wondering about spring cleaning it's hard drive. i use it daily for internet browsing and playing apps and sending/receiving emails from my yahoo account. After over a year of this i'm sure there's a load of 'crap' on the hard drive that surely can be cleaned off or erased? on my pc i'd run ccleaner and defrag. is there anything i can do on my Touch like this that'll spring clean the system? or dont i need to? just deleting internet history and cookies isn't really going to create much space.