Help! iPhone becomes extremely lag!

[beware090]

Hey, guys. It's so lag that when I press the home button it take about 5-10 seconds to light up and when I unlock it, it takes another 5-10 seconds to unlock. And when I tried to click on cydia, it automatically just shuts off and lock the device. When I tried to do the process again, it shut down my phone. It randomly reboot my phone too. Help ? My iPhone is 3.1.3 jailbroken with spirit jailbreak, 3GS, 16GB memory

[Cowboy]

What packages are you running sounds to me you running the processor to hard. You may need to restore and jb again you should run into the problem on a 3GS