Problems with SetCPU on Sidekick 4G

I installed SetCPU on my SK4G today, and for the most part things are running fine and I haven't had any problems. At first I was getting a lot of lag and my phone kept freezing, so I checked this post and it helped me out a lot. But I ran into one more problem. My phone keeps shutting off and I have to take out the battery and put it back in order to turn it on again. It's happened twice. Could SetCPU be the cause of the problem? **Profiles:** Main / 816max - 312min (ondemand) Temp > 35.6 C / 608max - 216min (ondemand / priority: 100) Charging / 760max - 456min (ondemand / priority: 75) Screen Off / 456max - 312min (ondemand / priority: 50) I should also mention that I don't have a custom ROM or Kernel on my phone. It's just rooted.