Whenever I am scrolling through contacts, sms messages or anything else it lags every 5 seconds, the scroll isnt smooth and its like it hits a bump when the page is scrolling up or down (when i flick to scroll it isn't smooth). I have tried rebooting. It is an Iphone 3g 3.0 jailbroken/unlocked with original applications, only new ones are cydia, winterboard and also SBsettings, yesterday I tried hooking up to my friends really slow computer to sync his songs and it was taking forever so I yanked the cable out while it was in sync. I also thought it was the Buuf2 theme I loaded with winterboard that was causing the lagging but when I turned everything off it was still lagging. What can I do to try and fix this before I try completing restoring and starting over?