Hi i just recently jailbroke my iphone 3gs 3.1.3 old bootrom with spirit and everything works perfectly except that it gets laggy sometimes and it often resprings or crashes consistantly when i try to open apps like cydia and rock or winterboard, its really annoying. It only does this sometimes, if im lucky i can open these apps. A lot of times i just have to use safe mode to open these applications. What's wrong with my phone? Anyone else experiencing these problems? Because my phone was fine until i went to 3.1.3...

Thanks